TY  - JOUR
AU  - Janković, Bojan Ž.
AU  - Kojić, Marija
AU  - Milošević, Milena
AU  - Rosić, Milena
AU  - Waisi, Hadi
AU  - Božilović, Bojana
AU  - Manić, Nebojša
AU  - Dodevski, Vladimir
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11391
AB  - Thermo-chemical conversion via the pyrolysis of cigarette butt (CB) filters was successfully valorized and upcycled in the pre-carbonization and carbonization stages. The pre-carbonization stage (devolatilization) of the precursor material (cellulose acetate filter, r-CAcF) was analyzed by micro-scale experiments under non-isothermal conditions using TG-DTG-DTA and DSC techniques. The results of a detailed kinetic study showed that the decomposition of r-CAcF takes place via complex mechanisms, including consecutive reaction steps and two single-step reactions. Consecutive stages include the α-transition referred to as a cellulose polymorphic transformation (cellulose I → II) through crystallization mechanism changes, where a more thermodynamically ordered system was obtained. It was found that the transformation rate of cellulose I → II (‘cellulose regeneration’) is strongly affected by the presence of alkali metals and the deacetylation process. Two single-step reactions showed significant overlapping behavior, which involves a nucleation-controlled scission mechanism (producing levoglucosan, gaseous products, and abundant radicals) and hydrolytic decomposition of cellulose by catalytic cleavage of glycosidic bonds with the presence of an acidic catalyst. A macro-scale experiment showed that the operating temperature and heating rate had the most notable effects on the total surface area of the manufactured carbon. A substantial degree of mesoporosity with a median pore radius of 3.1695 nm was identified. The presence of macroporosity on the carbon surface and acidic surface functional groups was observed.
T2  - Polymers
T1  - Upcycling of the Used Cigarette Butt Filters through Pyrolysis Process: Detailed Kinetic Mechanism with Bio-Char Characterization
VL  - 15
IS  - 14
SP  - 3054
DO  - 10.3390/polym15143054
ER  - 

@article{
author = "Janković, Bojan Ž. and Kojić, Marija and Milošević, Milena and Rosić, Milena and Waisi, Hadi and Božilović, Bojana and Manić, Nebojša and Dodevski, Vladimir",
year = "2023",
abstract = "Thermo-chemical conversion via the pyrolysis of cigarette butt (CB) filters was successfully valorized and upcycled in the pre-carbonization and carbonization stages. The pre-carbonization stage (devolatilization) of the precursor material (cellulose acetate filter, r-CAcF) was analyzed by micro-scale experiments under non-isothermal conditions using TG-DTG-DTA and DSC techniques. The results of a detailed kinetic study showed that the decomposition of r-CAcF takes place via complex mechanisms, including consecutive reaction steps and two single-step reactions. Consecutive stages include the α-transition referred to as a cellulose polymorphic transformation (cellulose I → II) through crystallization mechanism changes, where a more thermodynamically ordered system was obtained. It was found that the transformation rate of cellulose I → II (‘cellulose regeneration’) is strongly affected by the presence of alkali metals and the deacetylation process. Two single-step reactions showed significant overlapping behavior, which involves a nucleation-controlled scission mechanism (producing levoglucosan, gaseous products, and abundant radicals) and hydrolytic decomposition of cellulose by catalytic cleavage of glycosidic bonds with the presence of an acidic catalyst. A macro-scale experiment showed that the operating temperature and heating rate had the most notable effects on the total surface area of the manufactured carbon. A substantial degree of mesoporosity with a median pore radius of 3.1695 nm was identified. The presence of macroporosity on the carbon surface and acidic surface functional groups was observed.",
journal = "Polymers",
title = "Upcycling of the Used Cigarette Butt Filters through Pyrolysis Process: Detailed Kinetic Mechanism with Bio-Char Characterization",
volume = "15",
number = "14",
pages = "3054",
doi = "10.3390/polym15143054"
}

Janković, B. Ž., Kojić, M., Milošević, M., Rosić, M., Waisi, H., Božilović, B., Manić, N.,& Dodevski, V.. (2023). Upcycling of the Used Cigarette Butt Filters through Pyrolysis Process: Detailed Kinetic Mechanism with Bio-Char Characterization. in Polymers, 15(14), 3054.
https://doi.org/10.3390/polym15143054

Janković BŽ, Kojić M, Milošević M, Rosić M, Waisi H, Božilović B, Manić N, Dodevski V. Upcycling of the Used Cigarette Butt Filters through Pyrolysis Process: Detailed Kinetic Mechanism with Bio-Char Characterization. in Polymers. 2023;15(14):3054.
doi:10.3390/polym15143054 .

Janković, Bojan Ž., Kojić, Marija, Milošević, Milena, Rosić, Milena, Waisi, Hadi, Božilović, Bojana, Manić, Nebojša, Dodevski, Vladimir, "Upcycling of the Used Cigarette Butt Filters through Pyrolysis Process: Detailed Kinetic Mechanism with Bio-Char Characterization" in Polymers, 15, no. 14 (2023):3054,
https://doi.org/10.3390/polym15143054 . .

TY  - JOUR
AU  - Rajičić, Bratislav
AU  - Maslarević, Aleksandar
AU  - Bakić, Gordana
AU  - Maksimović, Vesna
AU  - Đukić, Miloš B.
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10614
AB  - In this study, two high chromium cast irons (HCCI) with different chromium content (15%Cr and 25%Cr), in as-cast and annealed conditions (heat-treated, HT), were tested to determine the erosion wear behavior of these alloys. Erosion tests were done using a gas blast sand facility with high erodent particle velocity (90 m/s) and high erodent feed rate, at an impact angle of 45°, which represents conditions similar to service conditions of some components of thermal power plants using pulverized high mineral content coals. To identify erosion mechanisms, microstructural characterization was done by a scanning electron microscope on samples before and after erosion tests. Identification of microstructural phases was done by X-ray diffraction analysis. The main results of the tests shown in this paper indicate that matrix plastic deformation and distribution of carbide phase have a significant contribution to erosion resistance of HCCI alloys in severe erosion service conditions.
T2  - Transactions of the Indian Institute of Metals
T1  - Erosion Wear Behavior of High Chromium Cast Irons
DO  - 10.1007/s12666-022-02860-7
ER  - 

@article{
author = "Rajičić, Bratislav and Maslarević, Aleksandar and Bakić, Gordana and Maksimović, Vesna and Đukić, Miloš B.",
year = "2023",
abstract = "In this study, two high chromium cast irons (HCCI) with different chromium content (15%Cr and 25%Cr), in as-cast and annealed conditions (heat-treated, HT), were tested to determine the erosion wear behavior of these alloys. Erosion tests were done using a gas blast sand facility with high erodent particle velocity (90 m/s) and high erodent feed rate, at an impact angle of 45°, which represents conditions similar to service conditions of some components of thermal power plants using pulverized high mineral content coals. To identify erosion mechanisms, microstructural characterization was done by a scanning electron microscope on samples before and after erosion tests. Identification of microstructural phases was done by X-ray diffraction analysis. The main results of the tests shown in this paper indicate that matrix plastic deformation and distribution of carbide phase have a significant contribution to erosion resistance of HCCI alloys in severe erosion service conditions.",
journal = "Transactions of the Indian Institute of Metals",
title = "Erosion Wear Behavior of High Chromium Cast Irons",
doi = "10.1007/s12666-022-02860-7"
}

Rajičić, B., Maslarević, A., Bakić, G., Maksimović, V.,& Đukić, M. B.. (2023). Erosion Wear Behavior of High Chromium Cast Irons. in Transactions of the Indian Institute of Metals.
https://doi.org/10.1007/s12666-022-02860-7

Rajičić B, Maslarević A, Bakić G, Maksimović V, Đukić MB. Erosion Wear Behavior of High Chromium Cast Irons. in Transactions of the Indian Institute of Metals. 2023;.
doi:10.1007/s12666-022-02860-7 .

Rajičić, Bratislav, Maslarević, Aleksandar, Bakić, Gordana, Maksimović, Vesna, Đukić, Miloš B., "Erosion Wear Behavior of High Chromium Cast Irons" in Transactions of the Indian Institute of Metals (2023),
https://doi.org/10.1007/s12666-022-02860-7 . .

TY  - JOUR
AU  - Maslarević, Aleksandar
AU  - Bakić, Gordana
AU  - Rajičić, Bratislav
AU  - Milošević, Nenad
AU  - Maksimović, Vesna
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11991
AB  - The paper describes the surfacing technology for coating of high-alloyed austenitic stainless steel 316L on the steel S235JR base material. Coatings were applied by plasma transferred arc welding process. The 5 samples were made using different welding currents while other welding param-eters were constant. Metallographic analysis of the obtained samples is used to establish a correlation between the micro-structural constituents and the applied welding current in the surfacing process. According to this it was possible to determine the optimal parameters of coating surfacing. The filler material was in the form of powder, while its charac-terization was performed by scanning electron microscopy, and the characterization of the obtained coatings by optical microscopy. © 2023 Society for Structural Integrity and Life (DIVK). All rights reserved.
AB  - Ovaj rad opisuje tehnologiju navarivanja prevlake od visokolegiranog austenitnog nerđajućeg čelika 316L na osnovni materijal od čelika S235JR. Prevlaka je nanesena tehnikom navarivanja plazmom. Izrađeno je 5 epruveta sa različitim vrednostima jačine struje, dok su ostali parametri navarivanja bili konstantni. Metalografska analiza dobijenih epruveta je iskorišćena za uspostavljanje korelacije između mikrostrukture i jačine struje tokom procesa navarivanja. Na osnovu toga je bilo moguće odrediti optimalne parametre za navarivanje. Korišćen je dodati materijal u obliku praha i njegova karakterizacija je izvršena uz pomoć skenirajućeg elektronskog mikroskopa, dok je karakterizacija samog navarenog sloja urađena primenom optičkog mikroskopa.
T2  - Structural Integrity and Life
T1  - Influence of plasma transferred arc welding parameters on the obtained microstructure of 316L coating
VL  - 23
IS  - 2
SP  - 123
EP  - 128
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11991
ER  - 

@article{
author = "Maslarević, Aleksandar and Bakić, Gordana and Rajičić, Bratislav and Milošević, Nenad and Maksimović, Vesna",
year = "2023",
abstract = "The paper describes the surfacing technology for coating of high-alloyed austenitic stainless steel 316L on the steel S235JR base material. Coatings were applied by plasma transferred arc welding process. The 5 samples were made using different welding currents while other welding param-eters were constant. Metallographic analysis of the obtained samples is used to establish a correlation between the micro-structural constituents and the applied welding current in the surfacing process. According to this it was possible to determine the optimal parameters of coating surfacing. The filler material was in the form of powder, while its charac-terization was performed by scanning electron microscopy, and the characterization of the obtained coatings by optical microscopy. © 2023 Society for Structural Integrity and Life (DIVK). All rights reserved., Ovaj rad opisuje tehnologiju navarivanja prevlake od visokolegiranog austenitnog nerđajućeg čelika 316L na osnovni materijal od čelika S235JR. Prevlaka je nanesena tehnikom navarivanja plazmom. Izrađeno je 5 epruveta sa različitim vrednostima jačine struje, dok su ostali parametri navarivanja bili konstantni. Metalografska analiza dobijenih epruveta je iskorišćena za uspostavljanje korelacije između mikrostrukture i jačine struje tokom procesa navarivanja. Na osnovu toga je bilo moguće odrediti optimalne parametre za navarivanje. Korišćen je dodati materijal u obliku praha i njegova karakterizacija je izvršena uz pomoć skenirajućeg elektronskog mikroskopa, dok je karakterizacija samog navarenog sloja urađena primenom optičkog mikroskopa.",
journal = "Structural Integrity and Life",
title = "Influence of plasma transferred arc welding parameters on the obtained microstructure of 316L coating",
volume = "23",
number = "2",
pages = "123-128",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11991"
}

Maslarević, A., Bakić, G., Rajičić, B., Milošević, N.,& Maksimović, V.. (2023). Influence of plasma transferred arc welding parameters on the obtained microstructure of 316L coating. in Structural Integrity and Life, 23(2), 123-128.
https://hdl.handle.net/21.15107/rcub_vinar_11991

Maslarević A, Bakić G, Rajičić B, Milošević N, Maksimović V. Influence of plasma transferred arc welding parameters on the obtained microstructure of 316L coating. in Structural Integrity and Life. 2023;23(2):123-128.
https://hdl.handle.net/21.15107/rcub_vinar_11991 .

Maslarević, Aleksandar, Bakić, Gordana, Rajičić, Bratislav, Milošević, Nenad, Maksimović, Vesna, "Influence of plasma transferred arc welding parameters on the obtained microstructure of 316L coating" in Structural Integrity and Life, 23, no. 2 (2023):123-128,
https://hdl.handle.net/21.15107/rcub_vinar_11991 .

TY  - JOUR
AU  - Đoković, Vladimir
AU  - Dudić, Duško
AU  - Dojčilović, Radovan
AU  - Marinković, Filip S.
AU  - Pavlović, Vera P.
AU  - Pavlović, Vladimir B.
AU  - Vlahović, Branislav
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11656
AB  - Barium titanate (BT) perovskite particles were surface modified by means of mechanical treatment and used as inorganic component in polyvinylidene fluoride (PVDF) based composites. The changes in electrical properties of the composite films with increasing in filler content were followed by dielectric spectroscopy, breakdown strength and D-E measurements. A comparison of the properties of the composites prepared with untreated and mechanically activated particles revealed that there is a significant difference in their performances at low filler concentrations (<20 wt%). Introduction of the surface modified ceramic particles into PVDF matrix led to an increase of the dielectric constant without affecting significantly the electrical breakdown strength. In contrast, when as received BT particles were used a filler, both dielectric constants and breakdown strengths of the composite films were lower than the corresponding values observed for the pure PVDF. At higher concentrations, however, the influence of pre-treatment of the filler on the effective electrical properties becomes less significant. The obtained results were discussed in terms of the pronounced crystallization of polar β and γ crystal phases of PVDF in the presence of surface modified BT fillers, which is confirmed by Raman spectroscopy.
T2  - Physica Scripta
T1  - Toward improved PVDF-BaTiO3 composite dielectrics: mechanical activation of the filler versus filler content
VL  - 98
IS  - 11
SP  - 115932
DO  - 10.1088/1402-4896/acff4d
ER  - 

@article{
author = "Đoković, Vladimir and Dudić, Duško and Dojčilović, Radovan and Marinković, Filip S. and Pavlović, Vera P. and Pavlović, Vladimir B. and Vlahović, Branislav",
year = "2023",
abstract = "Barium titanate (BT) perovskite particles were surface modified by means of mechanical treatment and used as inorganic component in polyvinylidene fluoride (PVDF) based composites. The changes in electrical properties of the composite films with increasing in filler content were followed by dielectric spectroscopy, breakdown strength and D-E measurements. A comparison of the properties of the composites prepared with untreated and mechanically activated particles revealed that there is a significant difference in their performances at low filler concentrations (<20 wt%). Introduction of the surface modified ceramic particles into PVDF matrix led to an increase of the dielectric constant without affecting significantly the electrical breakdown strength. In contrast, when as received BT particles were used a filler, both dielectric constants and breakdown strengths of the composite films were lower than the corresponding values observed for the pure PVDF. At higher concentrations, however, the influence of pre-treatment of the filler on the effective electrical properties becomes less significant. The obtained results were discussed in terms of the pronounced crystallization of polar β and γ crystal phases of PVDF in the presence of surface modified BT fillers, which is confirmed by Raman spectroscopy.",
journal = "Physica Scripta",
title = "Toward improved PVDF-BaTiO3 composite dielectrics: mechanical activation of the filler versus filler content",
volume = "98",
number = "11",
pages = "115932",
doi = "10.1088/1402-4896/acff4d"
}

Đoković, V., Dudić, D., Dojčilović, R., Marinković, F. S., Pavlović, V. P., Pavlović, V. B.,& Vlahović, B.. (2023). Toward improved PVDF-BaTiO3 composite dielectrics: mechanical activation of the filler versus filler content. in Physica Scripta, 98(11), 115932.
https://doi.org/10.1088/1402-4896/acff4d

Đoković V, Dudić D, Dojčilović R, Marinković FS, Pavlović VP, Pavlović VB, Vlahović B. Toward improved PVDF-BaTiO3 composite dielectrics: mechanical activation of the filler versus filler content. in Physica Scripta. 2023;98(11):115932.
doi:10.1088/1402-4896/acff4d .

Đoković, Vladimir, Dudić, Duško, Dojčilović, Radovan, Marinković, Filip S., Pavlović, Vera P., Pavlović, Vladimir B., Vlahović, Branislav, "Toward improved PVDF-BaTiO3 composite dielectrics: mechanical activation of the filler versus filler content" in Physica Scripta, 98, no. 11 (2023):115932,
https://doi.org/10.1088/1402-4896/acff4d . .

TY  - JOUR
AU  - Anđelković, Ljubica
AU  - Šuljagić, Marija
AU  - Mirković, Miljana
AU  - Pavlović, Vera P.
AU  - Petronijević, Ivan
AU  - Stanković, Dalibor M.
AU  - Jeremić, Dejan
AU  - Uskoković, Vuk
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10935
AB  - The combination of an intense absorption of visible light and p-type semiconducting nature makes spinel cobalt oxide (Co3O4) a very attractive material for various optoelectronic applications. However, the traditional methods for its synthesis have been either time- and energy-consuming or relying on toxic chemicals. To solve this issue, a simple, facile, and eco-friendly method of synthesis was successfully developed to obtain spinel Co3O4 nanoparticles. The novel method for obtaining pure and monophasic Co3O4 reported here is based on the thermal decomposition of hexaaquacobalt(II) D-camphor10-sulfonate at 900 °C. This fast solid-state synthesis route overcomes the disadvantages of many combustion methods, most critically by avoiding the use of toxic organic solvents. The synthesized material was subjected to a detailed characterization to assess its potential for use as a nanocatalyst. The band gap measurements indicated the presence of two band gaps, one at 2.10 eV and another at 1.22 eV, confirming the purity and semiconducting properties of the sample. The electrochemical studies demonstrated a significant enhancement in the electron transfer kinetics with the addition of the synthesized Co3O4 to the carbon-paste electrode, leading to an enhanced electrocatalytic performance. These prominent functional properties, suitable for a wide range of technological applications, pave way for the implementation of the reported method for the synthesis of Co3O4 on a larger industrial scale. © 2023 Elsevier Ltd and Techna Group S.r.l.
T2  - Ceramics International
T1  - Semiconducting cobalt oxide nanocatalyst obtained through an eco-friendly thermal decomposition
VL  - 49
IS  - 14, Part A
SP  - 23491
EP  - 23498
DO  - 10.1016/j.ceramint.2023.04.182
ER  - 

@article{
author = "Anđelković, Ljubica and Šuljagić, Marija and Mirković, Miljana and Pavlović, Vera P. and Petronijević, Ivan and Stanković, Dalibor M. and Jeremić, Dejan and Uskoković, Vuk",
year = "2023",
abstract = "The combination of an intense absorption of visible light and p-type semiconducting nature makes spinel cobalt oxide (Co3O4) a very attractive material for various optoelectronic applications. However, the traditional methods for its synthesis have been either time- and energy-consuming or relying on toxic chemicals. To solve this issue, a simple, facile, and eco-friendly method of synthesis was successfully developed to obtain spinel Co3O4 nanoparticles. The novel method for obtaining pure and monophasic Co3O4 reported here is based on the thermal decomposition of hexaaquacobalt(II) D-camphor10-sulfonate at 900 °C. This fast solid-state synthesis route overcomes the disadvantages of many combustion methods, most critically by avoiding the use of toxic organic solvents. The synthesized material was subjected to a detailed characterization to assess its potential for use as a nanocatalyst. The band gap measurements indicated the presence of two band gaps, one at 2.10 eV and another at 1.22 eV, confirming the purity and semiconducting properties of the sample. The electrochemical studies demonstrated a significant enhancement in the electron transfer kinetics with the addition of the synthesized Co3O4 to the carbon-paste electrode, leading to an enhanced electrocatalytic performance. These prominent functional properties, suitable for a wide range of technological applications, pave way for the implementation of the reported method for the synthesis of Co3O4 on a larger industrial scale. © 2023 Elsevier Ltd and Techna Group S.r.l.",
journal = "Ceramics International",
title = "Semiconducting cobalt oxide nanocatalyst obtained through an eco-friendly thermal decomposition",
volume = "49",
number = "14, Part A",
pages = "23491-23498",
doi = "10.1016/j.ceramint.2023.04.182"
}

Anđelković, L., Šuljagić, M., Mirković, M., Pavlović, V. P., Petronijević, I., Stanković, D. M., Jeremić, D.,& Uskoković, V.. (2023). Semiconducting cobalt oxide nanocatalyst obtained through an eco-friendly thermal decomposition. in Ceramics International, 49(14, Part A), 23491-23498.
https://doi.org/10.1016/j.ceramint.2023.04.182

Anđelković L, Šuljagić M, Mirković M, Pavlović VP, Petronijević I, Stanković DM, Jeremić D, Uskoković V. Semiconducting cobalt oxide nanocatalyst obtained through an eco-friendly thermal decomposition. in Ceramics International. 2023;49(14, Part A):23491-23498.
doi:10.1016/j.ceramint.2023.04.182 .

Anđelković, Ljubica, Šuljagić, Marija, Mirković, Miljana, Pavlović, Vera P., Petronijević, Ivan, Stanković, Dalibor M., Jeremić, Dejan, Uskoković, Vuk, "Semiconducting cobalt oxide nanocatalyst obtained through an eco-friendly thermal decomposition" in Ceramics International, 49, no. 14, Part A (2023):23491-23498,
https://doi.org/10.1016/j.ceramint.2023.04.182 . .

TY  - JOUR
AU  - Lučić, Milica
AU  - Potkonjak, Nebojša
AU  - Sredović Ignjatović, Ivana
AU  - Lević, Steva
AU  - Dajić-Stevanović, Zora
AU  - Kolašinac, Stefan
AU  - Belović, Miona
AU  - Torbica, Aleksandra
AU  - Zlatanović, Ivan
AU  - Pavlović, Vladimir
AU  - Onjia, Antonije
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11363
AB  - This study investigates the effects of ultrasound, in combination with chemical pretreatments, on the quality attributes (total phenolic and carotenoid content, antioxidant activity (2,2-Diphenyl-1-picrylhydrazyl assay (DPPH)), ferric-reducing ability (FRAP), CIE L* a* b* color, non-enzymatic browning, rehydration ratio, textural and morphological properties) of red pepper subjected to drying (hot air drying or freeze drying). The fractional factorial design was used to assess the impact of factors. The global Derringer desirability function was used to determine the optimal conditions for the best quality attributes of dried pepper. The drying method influenced total phenolic content, a* (redness), and initial rehydration ratio; pretreatment time significantly affected FRAP antiradical activity, a*, chroma and non-browning index, while pH-value had a significant effect on the texture of dried pepper. Non-enzymatic browning was reduced to 72.6%, while the DPPH antioxidant capacity of freeze-dried peppers was enhanced from 4.2% to 71.9%. Ultrasonic pretreatment led to changes in the pepper morphology, while potassium metabisulfite (KMS) was a more effective additive than citric acid.
T2  - Foods
T1  - Influence of Ultrasonic and Chemical Pretreatments on Quality Attributes of Dried Pepper (Capsicum annuum)
VL  - 12
IS  - 13
SP  - 2468
DO  - 10.3390/foods12132468
ER  - 

@article{
author = "Lučić, Milica and Potkonjak, Nebojša and Sredović Ignjatović, Ivana and Lević, Steva and Dajić-Stevanović, Zora and Kolašinac, Stefan and Belović, Miona and Torbica, Aleksandra and Zlatanović, Ivan and Pavlović, Vladimir and Onjia, Antonije",
year = "2023",
abstract = "This study investigates the effects of ultrasound, in combination with chemical pretreatments, on the quality attributes (total phenolic and carotenoid content, antioxidant activity (2,2-Diphenyl-1-picrylhydrazyl assay (DPPH)), ferric-reducing ability (FRAP), CIE L* a* b* color, non-enzymatic browning, rehydration ratio, textural and morphological properties) of red pepper subjected to drying (hot air drying or freeze drying). The fractional factorial design was used to assess the impact of factors. The global Derringer desirability function was used to determine the optimal conditions for the best quality attributes of dried pepper. The drying method influenced total phenolic content, a* (redness), and initial rehydration ratio; pretreatment time significantly affected FRAP antiradical activity, a*, chroma and non-browning index, while pH-value had a significant effect on the texture of dried pepper. Non-enzymatic browning was reduced to 72.6%, while the DPPH antioxidant capacity of freeze-dried peppers was enhanced from 4.2% to 71.9%. Ultrasonic pretreatment led to changes in the pepper morphology, while potassium metabisulfite (KMS) was a more effective additive than citric acid.",
journal = "Foods",
title = "Influence of Ultrasonic and Chemical Pretreatments on Quality Attributes of Dried Pepper (Capsicum annuum)",
volume = "12",
number = "13",
pages = "2468",
doi = "10.3390/foods12132468"
}

Lučić, M., Potkonjak, N., Sredović Ignjatović, I., Lević, S., Dajić-Stevanović, Z., Kolašinac, S., Belović, M., Torbica, A., Zlatanović, I., Pavlović, V.,& Onjia, A.. (2023). Influence of Ultrasonic and Chemical Pretreatments on Quality Attributes of Dried Pepper (Capsicum annuum). in Foods, 12(13), 2468.
https://doi.org/10.3390/foods12132468

Lučić M, Potkonjak N, Sredović Ignjatović I, Lević S, Dajić-Stevanović Z, Kolašinac S, Belović M, Torbica A, Zlatanović I, Pavlović V, Onjia A. Influence of Ultrasonic and Chemical Pretreatments on Quality Attributes of Dried Pepper (Capsicum annuum). in Foods. 2023;12(13):2468.
doi:10.3390/foods12132468 .

Lučić, Milica, Potkonjak, Nebojša, Sredović Ignjatović, Ivana, Lević, Steva, Dajić-Stevanović, Zora, Kolašinac, Stefan, Belović, Miona, Torbica, Aleksandra, Zlatanović, Ivan, Pavlović, Vladimir, Onjia, Antonije, "Influence of Ultrasonic and Chemical Pretreatments on Quality Attributes of Dried Pepper (Capsicum annuum)" in Foods, 12, no. 13 (2023):2468,
https://doi.org/10.3390/foods12132468 . .

TY  - CONF
AU  - Janković, Bojan
AU  - Janković, Marija
AU  - Krneta Nikolić, Jelena
AU  - Rajačić, Milica
AU  - Vukanac, Ivana
AU  - Sarap, Nataša
AU  - Manić, Nebojša
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12589
AB  - In this work, the thermal decomposition process of coal bottom ash (collected after lignitecombustion in coal-fired power plant “Kostolac B” (TEKO-B), Serbia) was investigated, usingsimultaneous TG (thermogravimetry) – DTG (derivative thermogravimetry) techniquesin an inert (Ar) atmosphere, at various heating rates (10.3, 20.9 and 32.1 K/min). In additionto thermal characterization of the sample, the chemical composition and naturally occurredradionuclides were also determined. Using the model-free (isoconversional) (by Friedman(FR), Kissinger-Akahira-Sunose (KAS), Ozawa-Flynn-Wall (OFW) and Vyazovkin (VY)methods) analysis, the complex kinetic nature of the process was successfully resolved. Theconducted numerical optimization of the process (using non-linear least square optimization)had confirmed accuracy and reliability of estimated kinetic parameters. Model-based(model-fitting) kinetic analysis showed the existence of a complex reaction scheme, overtwo consecutive reactions steps and one single-stage reaction step, via mechanism order An,F2, Fn, R3, Cnm (through n-dimensional nucleation/growth, chemical reactions, and n-thorder and m-power with autocatalysis mechanisms). Through physicochemical interpretationof mechanism scheme, an assessment of recovery of valuable metals and metal oxides wasperformed, by analysing the concentration of reaction species in a function of temperature ofindividual steps. Likewise, the influence of certain precursor involved in decomposition processas catalyst (in order to increase the yield of targeted product) was also inspected. Finally,the simulation of actual process using the results obtained from applied methods/models wasperformed, through application of modulated dynamic (MD) prediction.
PB  - Budapest : Akadémiai Kiadó
C3  - JTACC 2023 : 3rd Journal of Thermal Analysis and Calorimetry Conference and 9th V4 (Joint Czech-Hungarian-Polish-Slovakian) Thermoanalytical Conference : Book of asbtracts
T1  - Recovering of metals and metal oxides through thermal decomposition process of coal bottom ash: a comprehensive kinetic analysis
SP  - 263
EP  - 263
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12589
ER  - 

@conference{
author = "Janković, Bojan and Janković, Marija and Krneta Nikolić, Jelena and Rajačić, Milica and Vukanac, Ivana and Sarap, Nataša and Manić, Nebojša",
year = "2023",
abstract = "In this work, the thermal decomposition process of coal bottom ash (collected after lignitecombustion in coal-fired power plant “Kostolac B” (TEKO-B), Serbia) was investigated, usingsimultaneous TG (thermogravimetry) – DTG (derivative thermogravimetry) techniquesin an inert (Ar) atmosphere, at various heating rates (10.3, 20.9 and 32.1 K/min). In additionto thermal characterization of the sample, the chemical composition and naturally occurredradionuclides were also determined. Using the model-free (isoconversional) (by Friedman(FR), Kissinger-Akahira-Sunose (KAS), Ozawa-Flynn-Wall (OFW) and Vyazovkin (VY)methods) analysis, the complex kinetic nature of the process was successfully resolved. Theconducted numerical optimization of the process (using non-linear least square optimization)had confirmed accuracy and reliability of estimated kinetic parameters. Model-based(model-fitting) kinetic analysis showed the existence of a complex reaction scheme, overtwo consecutive reactions steps and one single-stage reaction step, via mechanism order An,F2, Fn, R3, Cnm (through n-dimensional nucleation/growth, chemical reactions, and n-thorder and m-power with autocatalysis mechanisms). Through physicochemical interpretationof mechanism scheme, an assessment of recovery of valuable metals and metal oxides wasperformed, by analysing the concentration of reaction species in a function of temperature ofindividual steps. Likewise, the influence of certain precursor involved in decomposition processas catalyst (in order to increase the yield of targeted product) was also inspected. Finally,the simulation of actual process using the results obtained from applied methods/models wasperformed, through application of modulated dynamic (MD) prediction.",
publisher = "Budapest : Akadémiai Kiadó",
journal = "JTACC 2023 : 3rd Journal of Thermal Analysis and Calorimetry Conference and 9th V4 (Joint Czech-Hungarian-Polish-Slovakian) Thermoanalytical Conference : Book of asbtracts",
title = "Recovering of metals and metal oxides through thermal decomposition process of coal bottom ash: a comprehensive kinetic analysis",
pages = "263-263",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12589"
}

Janković, B., Janković, M., Krneta Nikolić, J., Rajačić, M., Vukanac, I., Sarap, N.,& Manić, N.. (2023). Recovering of metals and metal oxides through thermal decomposition process of coal bottom ash: a comprehensive kinetic analysis. in JTACC 2023 : 3rd Journal of Thermal Analysis and Calorimetry Conference and 9th V4 (Joint Czech-Hungarian-Polish-Slovakian) Thermoanalytical Conference : Book of asbtracts
Budapest : Akadémiai Kiadó., 263-263.
https://hdl.handle.net/21.15107/rcub_vinar_12589

Janković B, Janković M, Krneta Nikolić J, Rajačić M, Vukanac I, Sarap N, Manić N. Recovering of metals and metal oxides through thermal decomposition process of coal bottom ash: a comprehensive kinetic analysis. in JTACC 2023 : 3rd Journal of Thermal Analysis and Calorimetry Conference and 9th V4 (Joint Czech-Hungarian-Polish-Slovakian) Thermoanalytical Conference : Book of asbtracts. 2023;:263-263.
https://hdl.handle.net/21.15107/rcub_vinar_12589 .

Janković, Bojan, Janković, Marija, Krneta Nikolić, Jelena, Rajačić, Milica, Vukanac, Ivana, Sarap, Nataša, Manić, Nebojša, "Recovering of metals and metal oxides through thermal decomposition process of coal bottom ash: a comprehensive kinetic analysis" in JTACC 2023 : 3rd Journal of Thermal Analysis and Calorimetry Conference and 9th V4 (Joint Czech-Hungarian-Polish-Slovakian) Thermoanalytical Conference : Book of asbtracts (2023):263-263,
https://hdl.handle.net/21.15107/rcub_vinar_12589 .

TY  - JOUR
AU  - Jelić, Dijana
AU  - Đermanović, Mirjana
AU  - Marković, Anđela
AU  - Manić, Nebojša
AU  - Veličković, Suzana
AU  - Veljković, Filip M.
AU  - Janković, Bojan Ž.
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10738
AB  - This work provides detailed mechanistic analysis of thermo-oxidative degradation behavior of vitamin D3—Ca (CaCO3 form) solid state supplement formulation. Analytical techniques such Attenuated Total Reflection Fourier-transform Infrared (ATR-FTIR) spectroscopy and Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry (MALDI-MS) were used for analysis of homogeneity of active pharmaceutical ingredients (APIs) throughout excipients contained within solid dosage forms. Information gained from MALDI-MS experiments was used to improve and better understand interactions present, later clearly disclosed through kinetic modeling. It was found that process mechanism proceeds via two single-step unbranched reactions and two steps of consecutive reactions. Key features include vitamin D3 meltings and degradation via hydrogen abstraction followed by addition of oxygen forming 1-hydroxy-vitamin D3 and further through its dehydration to 1-keto-vitamin D3. Identified product 1-hydroxy-vitamin D3 is substantial for enhancing the immune response of human body in fight against respiratory viruses. Another two degradation products, namely pyrocalciferol and isopyrocalciferol, produced by thermal isomerization at higher temperatures, were also identified. These vitamin epimers have crucial role in functioning of immune cells. Degradation process of mineral structure occurs through water molecules removal, forming anhydrous polymorph of CaCO3, where formation of solid (CaO) and gaseous (CO2) products participates in kinetically stabilized additive-functionalized amorphous CaCO3 crystallization. Confirmation of correctness of proposed degradation mechanism was verified by modulated dynamic (MD) predictions. Information obtained is valuable and suitable for safety evaluations of given supplement, but also could be applied for solid state forms, which are generally sensitive to oxidative conditions. © 2023, Akadémiai Kiadó, Budapest, Hungary.
T2  - Journal of Thermal Analysis and Calorimetry
T1  - Novel insight in thermo-oxidative kinetics of vitamin D-based supplement formulation using TG–DTG–DTA, ATR-FTIR and MALDI-MS techniques
VL  - 148
SP  - 4281
EP  - 4305
DO  - 10.1007/s10973-023-12017-3
ER  - 

@article{
author = "Jelić, Dijana and Đermanović, Mirjana and Marković, Anđela and Manić, Nebojša and Veličković, Suzana and Veljković, Filip M. and Janković, Bojan Ž.",
year = "2023",
abstract = "This work provides detailed mechanistic analysis of thermo-oxidative degradation behavior of vitamin D3—Ca (CaCO3 form) solid state supplement formulation. Analytical techniques such Attenuated Total Reflection Fourier-transform Infrared (ATR-FTIR) spectroscopy and Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry (MALDI-MS) were used for analysis of homogeneity of active pharmaceutical ingredients (APIs) throughout excipients contained within solid dosage forms. Information gained from MALDI-MS experiments was used to improve and better understand interactions present, later clearly disclosed through kinetic modeling. It was found that process mechanism proceeds via two single-step unbranched reactions and two steps of consecutive reactions. Key features include vitamin D3 meltings and degradation via hydrogen abstraction followed by addition of oxygen forming 1-hydroxy-vitamin D3 and further through its dehydration to 1-keto-vitamin D3. Identified product 1-hydroxy-vitamin D3 is substantial for enhancing the immune response of human body in fight against respiratory viruses. Another two degradation products, namely pyrocalciferol and isopyrocalciferol, produced by thermal isomerization at higher temperatures, were also identified. These vitamin epimers have crucial role in functioning of immune cells. Degradation process of mineral structure occurs through water molecules removal, forming anhydrous polymorph of CaCO3, where formation of solid (CaO) and gaseous (CO2) products participates in kinetically stabilized additive-functionalized amorphous CaCO3 crystallization. Confirmation of correctness of proposed degradation mechanism was verified by modulated dynamic (MD) predictions. Information obtained is valuable and suitable for safety evaluations of given supplement, but also could be applied for solid state forms, which are generally sensitive to oxidative conditions. © 2023, Akadémiai Kiadó, Budapest, Hungary.",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "Novel insight in thermo-oxidative kinetics of vitamin D-based supplement formulation using TG–DTG–DTA, ATR-FTIR and MALDI-MS techniques",
volume = "148",
pages = "4281-4305",
doi = "10.1007/s10973-023-12017-3"
}

Jelić, D., Đermanović, M., Marković, A., Manić, N., Veličković, S., Veljković, F. M.,& Janković, B. Ž.. (2023). Novel insight in thermo-oxidative kinetics of vitamin D-based supplement formulation using TG–DTG–DTA, ATR-FTIR and MALDI-MS techniques. in Journal of Thermal Analysis and Calorimetry, 148, 4281-4305.
https://doi.org/10.1007/s10973-023-12017-3

Jelić D, Đermanović M, Marković A, Manić N, Veličković S, Veljković FM, Janković BŽ. Novel insight in thermo-oxidative kinetics of vitamin D-based supplement formulation using TG–DTG–DTA, ATR-FTIR and MALDI-MS techniques. in Journal of Thermal Analysis and Calorimetry. 2023;148:4281-4305.
doi:10.1007/s10973-023-12017-3 .

Jelić, Dijana, Đermanović, Mirjana, Marković, Anđela, Manić, Nebojša, Veličković, Suzana, Veljković, Filip M., Janković, Bojan Ž., "Novel insight in thermo-oxidative kinetics of vitamin D-based supplement formulation using TG–DTG–DTA, ATR-FTIR and MALDI-MS techniques" in Journal of Thermal Analysis and Calorimetry, 148 (2023):4281-4305,
https://doi.org/10.1007/s10973-023-12017-3 . .

TY  - CONF
AU  - Manić, Nebojša
AU  - Janković, Bojan
AU  - Veljković, Filip
AU  - Pijović, Milena
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12614
AB  - This paper considers possible uses of fruit-based waste for the production of valuable chemicals and biofuel precursors through recycling by thermochemical conversion. Slow pyrolysis of goji berry mesocarp as sugar-riched feedstock was investigated using simultaneous thermal analysis measurements in non-isothermal conditions. This work announced that pyrolysis of goji berry mesocarp represents a promising route to obtaining an important key platform chemical - 5-hydroxymethylfurfural (5-HMF). To establish the process mechanism, two kinetic approaches were used for kinetic parameters determination: first, Friedman’s and Vyazovkin’s model-free (inverse) methods supported by numerical optimization of the process, and second, the model-based (direct) method. Model-free results showed a complex evolution of activation energy with conversion, indicating a multi-step mechanism. It was found that autocatalytic dehydration of fructose (in the presence of Lewis acids) is responsible for the production of 5-HMF at a low heating rate (5.0 K/min) with a maximum 5-HMF theoretical yield of 63.20 %. Higher heating rates (10.0 K/min and 15.0 K/min) trigger the fructose autogenesis behavior which opens the transferability channel to glucose (substrate) engagement for 5-HMF theoretical high yield production. It was revealed that differences between kinetic parameters are a consequence of the change in the mechanism of glycosidic bond cleavage. The validity of the proposed reaction mechanism scheme and accuracy of kinetic parameters was confirmed by modulated dynamic predictions.
PB  - SDEWES - International Centre for Sustainable Development of Energy, Water and Environment Systems
PB  - Zagreb : Faculty of Mechanical Engineering and Naval Architecture
C3  - 18th Conference on Sustainable Development of Energy, Water and Environment Systems : Proceedings
T1  - The kinetic study of fruit processing waste pyrolysis for efficient production of platform chemicals
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12614
ER  - 

@conference{
author = "Manić, Nebojša and Janković, Bojan and Veljković, Filip and Pijović, Milena",
year = "2023",
abstract = "This paper considers possible uses of fruit-based waste for the production of valuable chemicals and biofuel precursors through recycling by thermochemical conversion. Slow pyrolysis of goji berry mesocarp as sugar-riched feedstock was investigated using simultaneous thermal analysis measurements in non-isothermal conditions. This work announced that pyrolysis of goji berry mesocarp represents a promising route to obtaining an important key platform chemical - 5-hydroxymethylfurfural (5-HMF). To establish the process mechanism, two kinetic approaches were used for kinetic parameters determination: first, Friedman’s and Vyazovkin’s model-free (inverse) methods supported by numerical optimization of the process, and second, the model-based (direct) method. Model-free results showed a complex evolution of activation energy with conversion, indicating a multi-step mechanism. It was found that autocatalytic dehydration of fructose (in the presence of Lewis acids) is responsible for the production of 5-HMF at a low heating rate (5.0 K/min) with a maximum 5-HMF theoretical yield of 63.20 %. Higher heating rates (10.0 K/min and 15.0 K/min) trigger the fructose autogenesis behavior which opens the transferability channel to glucose (substrate) engagement for 5-HMF theoretical high yield production. It was revealed that differences between kinetic parameters are a consequence of the change in the mechanism of glycosidic bond cleavage. The validity of the proposed reaction mechanism scheme and accuracy of kinetic parameters was confirmed by modulated dynamic predictions.",
publisher = "SDEWES - International Centre for Sustainable Development of Energy, Water and Environment Systems, Zagreb : Faculty of Mechanical Engineering and Naval Architecture",
journal = "18th Conference on Sustainable Development of Energy, Water and Environment Systems : Proceedings",
title = "The kinetic study of fruit processing waste pyrolysis for efficient production of platform chemicals",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12614"
}

Manić, N., Janković, B., Veljković, F.,& Pijović, M.. (2023). The kinetic study of fruit processing waste pyrolysis for efficient production of platform chemicals. in 18th Conference on Sustainable Development of Energy, Water and Environment Systems : Proceedings
SDEWES - International Centre for Sustainable Development of Energy, Water and Environment Systems..
https://hdl.handle.net/21.15107/rcub_vinar_12614

Manić N, Janković B, Veljković F, Pijović M. The kinetic study of fruit processing waste pyrolysis for efficient production of platform chemicals. in 18th Conference on Sustainable Development of Energy, Water and Environment Systems : Proceedings. 2023;.
https://hdl.handle.net/21.15107/rcub_vinar_12614 .

Manić, Nebojša, Janković, Bojan, Veljković, Filip, Pijović, Milena, "The kinetic study of fruit processing waste pyrolysis for efficient production of platform chemicals" in 18th Conference on Sustainable Development of Energy, Water and Environment Systems : Proceedings (2023),
https://hdl.handle.net/21.15107/rcub_vinar_12614 .

TY  - CONF
AU  - Stojiljković, Dragoslava
AU  - Radojević, Miloš
AU  - Bešenić, Tibor
AU  - Vujanović, Milan
AU  - Wang, Xuebin
AU  - Janković, Bojan
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12619
AB  - The fuel-NOx emissions during the conversion of carbon-based feedstock into energy and chemicals are on a global level in focus last decades due to environmental issues. The emission of nitrogen oxides is recognized among the other pollutants, as one of the key environmental problems related to energy production by various types of feedstocks. In this paper, the effect of fuel-based nitrogen delivery on the development of NOx precursors (HCN and NH3) during the devolatilization process of properly selected samples (coal, sawdust, wheat straw, and ground coffee waste) has been examined. TG-DTG thermal analysis techniques, coupled with mass spectrometry (MS) were used for the assessment of nitrogen distribution for HCN and NH3 gases, as intermediate species during feedstocks devolatilization, which directly influences the NOx emission during thermochemical conversion processes (pyrolysis and combustion). The mass balance of nitrogen together with performed EGA (evolved gas analysis), and the distribution of nitrogen between volatiles and formed char were also determined. The obtained data for investigated samples could be exploited for further thermochemical process optimization, in regard to NOx emissions. The presented results could be used as the experimentally determined input parameters for the mathematical modeling of indicated processes, and with further analysis can be transferred to large-scale industrial plant applications.
PB  - Budapest : Akadémiai Kiadó
C3  - JTACC 2023 : 3rd Journal of Thermal Analysis and Calorimetry Conference and 9th V4 (Joint Czech-Hungarian-Polish-Slovakian) Thermoanalytical Conference : Book of asbtracts
T1  - Nitrogen distribution analysis during the devolatilization process of various feedstocks using TG-DTG-MS analysis
SP  - 372
EP  - 372
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12619
ER  - 

@conference{
author = "Stojiljković, Dragoslava and Radojević, Miloš and Bešenić, Tibor and Vujanović, Milan and Wang, Xuebin and Janković, Bojan",
year = "2023",
abstract = "The fuel-NOx emissions during the conversion of carbon-based feedstock into energy and chemicals are on a global level in focus last decades due to environmental issues. The emission of nitrogen oxides is recognized among the other pollutants, as one of the key environmental problems related to energy production by various types of feedstocks. In this paper, the effect of fuel-based nitrogen delivery on the development of NOx precursors (HCN and NH3) during the devolatilization process of properly selected samples (coal, sawdust, wheat straw, and ground coffee waste) has been examined. TG-DTG thermal analysis techniques, coupled with mass spectrometry (MS) were used for the assessment of nitrogen distribution for HCN and NH3 gases, as intermediate species during feedstocks devolatilization, which directly influences the NOx emission during thermochemical conversion processes (pyrolysis and combustion). The mass balance of nitrogen together with performed EGA (evolved gas analysis), and the distribution of nitrogen between volatiles and formed char were also determined. The obtained data for investigated samples could be exploited for further thermochemical process optimization, in regard to NOx emissions. The presented results could be used as the experimentally determined input parameters for the mathematical modeling of indicated processes, and with further analysis can be transferred to large-scale industrial plant applications.",
publisher = "Budapest : Akadémiai Kiadó",
journal = "JTACC 2023 : 3rd Journal of Thermal Analysis and Calorimetry Conference and 9th V4 (Joint Czech-Hungarian-Polish-Slovakian) Thermoanalytical Conference : Book of asbtracts",
title = "Nitrogen distribution analysis during the devolatilization process of various feedstocks using TG-DTG-MS analysis",
pages = "372-372",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12619"
}

Stojiljković, D., Radojević, M., Bešenić, T., Vujanović, M., Wang, X.,& Janković, B.. (2023). Nitrogen distribution analysis during the devolatilization process of various feedstocks using TG-DTG-MS analysis. in JTACC 2023 : 3rd Journal of Thermal Analysis and Calorimetry Conference and 9th V4 (Joint Czech-Hungarian-Polish-Slovakian) Thermoanalytical Conference : Book of asbtracts
Budapest : Akadémiai Kiadó., 372-372.
https://hdl.handle.net/21.15107/rcub_vinar_12619

Stojiljković D, Radojević M, Bešenić T, Vujanović M, Wang X, Janković B. Nitrogen distribution analysis during the devolatilization process of various feedstocks using TG-DTG-MS analysis. in JTACC 2023 : 3rd Journal of Thermal Analysis and Calorimetry Conference and 9th V4 (Joint Czech-Hungarian-Polish-Slovakian) Thermoanalytical Conference : Book of asbtracts. 2023;:372-372.
https://hdl.handle.net/21.15107/rcub_vinar_12619 .

Stojiljković, Dragoslava, Radojević, Miloš, Bešenić, Tibor, Vujanović, Milan, Wang, Xuebin, Janković, Bojan, "Nitrogen distribution analysis during the devolatilization process of various feedstocks using TG-DTG-MS analysis" in JTACC 2023 : 3rd Journal of Thermal Analysis and Calorimetry Conference and 9th V4 (Joint Czech-Hungarian-Polish-Slovakian) Thermoanalytical Conference : Book of asbtracts (2023):372-372,
https://hdl.handle.net/21.15107/rcub_vinar_12619 .

TY  - CONF
AU  - Brat, Zagorka
AU  - Janković, Bojan
AU  - Stojiljković, Dragoslava
AU  - Vujanović, Milan
AU  - Wang, Xuebin
AU  - Manić, Nebojša
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12612
AB  - The pyrolysis process of two low-rank coals (lignite Kostolac and Kolubara), and two wastematerials (spent coffee ground and tyre rubber granulate) as well as their blends, have beenexamined by preliminary thermogravimetric analysis. Thermal decomposition experiments wereperformed in an N2 atmosphere on raw (pyrolysis) and blend (co-pyrolysis) samples at heatingrates of 10, 15, and 20 K min-1. The lignite-waste blend was created in the following masspercentage ratios 90:10, 80:20, and 70:30. Based on obtained experimental data, the stronginteractions were identified between the examined lignite and waste materials during copyrolysis,indicating the presence of a positive synergistic effect. The characteristics of the rawwaste sample and the heating rate were recognized as two key parameters that influenced thesynergy result with lignite sample, in lignite-spent coffee ground blends. For lignite-waste rubbergranulate blends, the blending ratio is critical for beneficial synergistic effect (ratios of wasterubber granulate with lignite less than 30% are preferred). The probable synergistic mechanismswere further explained using performed kinetic analysis by varying the effective activation energywith temperature and conversion. In addition, the influence of micro-scale conditioncharacteristics such as heating rate (as the experimental regulatory factor) on the magnituderesponse of synergistic effect during co-pyrolysis was also investigated in this work.
PB  - SDEWES - International Centre for Sustainable Development of Energy, Water and Environment Systems
PB  - Zagreb : Faculty of Mechanical Engineering and Naval Architecture
C3  - 18th Conference on Sustainable Development of Energy, Water and Environment Systems : Proceedings
T1  - Co-Pyrolysis Process of Coal and Waste: Synergistic Effect and Influence of Microscale Conditions
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12612
ER  - 

@conference{
author = "Brat, Zagorka and Janković, Bojan and Stojiljković, Dragoslava and Vujanović, Milan and Wang, Xuebin and Manić, Nebojša",
year = "2023",
abstract = "The pyrolysis process of two low-rank coals (lignite Kostolac and Kolubara), and two wastematerials (spent coffee ground and tyre rubber granulate) as well as their blends, have beenexamined by preliminary thermogravimetric analysis. Thermal decomposition experiments wereperformed in an N2 atmosphere on raw (pyrolysis) and blend (co-pyrolysis) samples at heatingrates of 10, 15, and 20 K min-1. The lignite-waste blend was created in the following masspercentage ratios 90:10, 80:20, and 70:30. Based on obtained experimental data, the stronginteractions were identified between the examined lignite and waste materials during copyrolysis,indicating the presence of a positive synergistic effect. The characteristics of the rawwaste sample and the heating rate were recognized as two key parameters that influenced thesynergy result with lignite sample, in lignite-spent coffee ground blends. For lignite-waste rubbergranulate blends, the blending ratio is critical for beneficial synergistic effect (ratios of wasterubber granulate with lignite less than 30% are preferred). The probable synergistic mechanismswere further explained using performed kinetic analysis by varying the effective activation energywith temperature and conversion. In addition, the influence of micro-scale conditioncharacteristics such as heating rate (as the experimental regulatory factor) on the magnituderesponse of synergistic effect during co-pyrolysis was also investigated in this work.",
publisher = "SDEWES - International Centre for Sustainable Development of Energy, Water and Environment Systems, Zagreb : Faculty of Mechanical Engineering and Naval Architecture",
journal = "18th Conference on Sustainable Development of Energy, Water and Environment Systems : Proceedings",
title = "Co-Pyrolysis Process of Coal and Waste: Synergistic Effect and Influence of Microscale Conditions",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12612"
}

Brat, Z., Janković, B., Stojiljković, D., Vujanović, M., Wang, X.,& Manić, N.. (2023). Co-Pyrolysis Process of Coal and Waste: Synergistic Effect and Influence of Microscale Conditions. in 18th Conference on Sustainable Development of Energy, Water and Environment Systems : Proceedings
SDEWES - International Centre for Sustainable Development of Energy, Water and Environment Systems..
https://hdl.handle.net/21.15107/rcub_vinar_12612

Brat Z, Janković B, Stojiljković D, Vujanović M, Wang X, Manić N. Co-Pyrolysis Process of Coal and Waste: Synergistic Effect and Influence of Microscale Conditions. in 18th Conference on Sustainable Development of Energy, Water and Environment Systems : Proceedings. 2023;.
https://hdl.handle.net/21.15107/rcub_vinar_12612 .

Brat, Zagorka, Janković, Bojan, Stojiljković, Dragoslava, Vujanović, Milan, Wang, Xuebin, Manić, Nebojša, "Co-Pyrolysis Process of Coal and Waste: Synergistic Effect and Influence of Microscale Conditions" in 18th Conference on Sustainable Development of Energy, Water and Environment Systems : Proceedings (2023),
https://hdl.handle.net/21.15107/rcub_vinar_12612 .

TY  - JOUR
AU  - Manić, Nebojša G.
AU  - Janković, Bojan Ž.
AU  - Stojiljković, Dragoslava
AU  - Popović, Mina
AU  - Cvetković, Slobodan
AU  - Mikulčić, Hrvoje
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10595
AB  - The actual paper analyses the performance of different energy crop biomasses, Miscanthus x giganteus Greef et Deu (EC-1) and Arundo donax L. (EC-2) stems, during slow pyrolysis process monitored by simultaneous TG-DTG-MS techniques, through chemical exergy analysis. In addition to considering the physical and chemical characteristics of given feedstocks for their efficient thermo-chemical conversion into pyrolytic gas, in this study, a theoretical simulation for their implementation use in the gasification process was also performed. The performed thermodynamic study with detailed exergy analysis showed that the large contribution of exergy in syngas components such as CO and H2 originates primarily from cellulose pyrolysis of EC-1, while large exergy contribution in syngas component as CH4 originates from lignin pyrolysis of EC-2. It was founded that the exergy efficiency of syngas for EC-1 equals 19.04%, which is lower than the exergy efficiency of syngas for EC-2 (20.46%), as a result of higher ash content in EC-1. Also, it was reported that higher carbon (C) and hydrogen (H) contents present in the EC-2 sample generate higher gaseous energy and exergy values, i.e. the increment of exergy efficiency of syngas, by both approaches (pyrolysis and gasification exergy analysis), but results in a lower biomass chemical exergy (18.28 MJ kg−1). The methodology applied to the gasification process was shown a higher exergy efficiency for EC-2 (∼36 – 42%) than for EC-1 (∼33 – 39%), dependant on the equivalence ratio (ER).
T2  - Thermochimica Acta
T1  - Thermodynamic study on energy crops thermochemical conversion to increase the efficiency of energy production
VL  - 719
SP  - 179408
DO  - 10.1016/j.tca.2022.179408
ER  - 

@article{
author = "Manić, Nebojša G. and Janković, Bojan Ž. and Stojiljković, Dragoslava and Popović, Mina and Cvetković, Slobodan and Mikulčić, Hrvoje",
year = "2023",
abstract = "The actual paper analyses the performance of different energy crop biomasses, Miscanthus x giganteus Greef et Deu (EC-1) and Arundo donax L. (EC-2) stems, during slow pyrolysis process monitored by simultaneous TG-DTG-MS techniques, through chemical exergy analysis. In addition to considering the physical and chemical characteristics of given feedstocks for their efficient thermo-chemical conversion into pyrolytic gas, in this study, a theoretical simulation for their implementation use in the gasification process was also performed. The performed thermodynamic study with detailed exergy analysis showed that the large contribution of exergy in syngas components such as CO and H2 originates primarily from cellulose pyrolysis of EC-1, while large exergy contribution in syngas component as CH4 originates from lignin pyrolysis of EC-2. It was founded that the exergy efficiency of syngas for EC-1 equals 19.04%, which is lower than the exergy efficiency of syngas for EC-2 (20.46%), as a result of higher ash content in EC-1. Also, it was reported that higher carbon (C) and hydrogen (H) contents present in the EC-2 sample generate higher gaseous energy and exergy values, i.e. the increment of exergy efficiency of syngas, by both approaches (pyrolysis and gasification exergy analysis), but results in a lower biomass chemical exergy (18.28 MJ kg−1). The methodology applied to the gasification process was shown a higher exergy efficiency for EC-2 (∼36 – 42%) than for EC-1 (∼33 – 39%), dependant on the equivalence ratio (ER).",
journal = "Thermochimica Acta",
title = "Thermodynamic study on energy crops thermochemical conversion to increase the efficiency of energy production",
volume = "719",
pages = "179408",
doi = "10.1016/j.tca.2022.179408"
}

Manić, N. G., Janković, B. Ž., Stojiljković, D., Popović, M., Cvetković, S.,& Mikulčić, H.. (2023). Thermodynamic study on energy crops thermochemical conversion to increase the efficiency of energy production. in Thermochimica Acta, 719, 179408.
https://doi.org/10.1016/j.tca.2022.179408

Manić NG, Janković BŽ, Stojiljković D, Popović M, Cvetković S, Mikulčić H. Thermodynamic study on energy crops thermochemical conversion to increase the efficiency of energy production. in Thermochimica Acta. 2023;719:179408.
doi:10.1016/j.tca.2022.179408 .

Manić, Nebojša G., Janković, Bojan Ž., Stojiljković, Dragoslava, Popović, Mina, Cvetković, Slobodan, Mikulčić, Hrvoje, "Thermodynamic study on energy crops thermochemical conversion to increase the efficiency of energy production" in Thermochimica Acta, 719 (2023):179408,
https://doi.org/10.1016/j.tca.2022.179408 . .

TY  - JOUR
AU  - Janković, Bojan Ž.
AU  - Manić, Nebojša G.
AU  - Popović, Mina
AU  - Cvetković, Slobodan
AU  - Dželetović, Željko
AU  - Stojiljković, Dragoslava
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10611
AB  - This work provides insight into possibilities of maximum utilization of C3-C4 energy crops for thermo-chemical conversion (slow pyrolysis) into high value biochemicals, platform chemicals, drop-in fuels and combustible gases, using coupled kinetic and thermodynamic analyses. In order to examine the kinetics of decomposition of lignocellulosic components, model-free and model-based methods faded from thermal analysis data were used. Thermodynamic compensation was used for explicatory of entropy controlled process, where conformational changes and chemical exchange directly affect the type and distribution of obtained pyrolytic products. It was shown that external variable (i.e. the heating rate/temperature) does not change either an entire reaction mechanism (mechanistic nature of MG and AD pyrolyses) or transition state, but it changes activation enthalpy and activation entropy which lead to differences in terms of heat energy consumption, pyrolysis favorability and thus rates of generation of activated complex among feedstocks. To investigate the interplay of catalysts (present in feedstocks as minerals) and reactants, selective energy transfer (SET) model was applied. The model showed an activity of catalyst with different outputs towards two reactants, lignin part of the structure in MG and 1,8-cineole in AD. It was shown that AD is more convenient for thermal conversion than MG, regarding to lower transformation energy requirement, higher reactivity, as well as much faster accumulation of products. © 2023 Elsevier B.V.
T2  - Industrial Crops and Products
T1  - Kinetic and thermodynamic compensation phenomena in C3 and C4 energy crops pyrolysis: Implications on reaction mechanisms and product distributions
VL  - 194
DO  - 10.1016/j.indcrop.2023.116275
ER  - 

@article{
author = "Janković, Bojan Ž. and Manić, Nebojša G. and Popović, Mina and Cvetković, Slobodan and Dželetović, Željko and Stojiljković, Dragoslava",
year = "2023",
abstract = "This work provides insight into possibilities of maximum utilization of C3-C4 energy crops for thermo-chemical conversion (slow pyrolysis) into high value biochemicals, platform chemicals, drop-in fuels and combustible gases, using coupled kinetic and thermodynamic analyses. In order to examine the kinetics of decomposition of lignocellulosic components, model-free and model-based methods faded from thermal analysis data were used. Thermodynamic compensation was used for explicatory of entropy controlled process, where conformational changes and chemical exchange directly affect the type and distribution of obtained pyrolytic products. It was shown that external variable (i.e. the heating rate/temperature) does not change either an entire reaction mechanism (mechanistic nature of MG and AD pyrolyses) or transition state, but it changes activation enthalpy and activation entropy which lead to differences in terms of heat energy consumption, pyrolysis favorability and thus rates of generation of activated complex among feedstocks. To investigate the interplay of catalysts (present in feedstocks as minerals) and reactants, selective energy transfer (SET) model was applied. The model showed an activity of catalyst with different outputs towards two reactants, lignin part of the structure in MG and 1,8-cineole in AD. It was shown that AD is more convenient for thermal conversion than MG, regarding to lower transformation energy requirement, higher reactivity, as well as much faster accumulation of products. © 2023 Elsevier B.V.",
journal = "Industrial Crops and Products",
title = "Kinetic and thermodynamic compensation phenomena in C3 and C4 energy crops pyrolysis: Implications on reaction mechanisms and product distributions",
volume = "194",
doi = "10.1016/j.indcrop.2023.116275"
}

Janković, B. Ž., Manić, N. G., Popović, M., Cvetković, S., Dželetović, Ž.,& Stojiljković, D.. (2023). Kinetic and thermodynamic compensation phenomena in C3 and C4 energy crops pyrolysis: Implications on reaction mechanisms and product distributions. in Industrial Crops and Products, 194.
https://doi.org/10.1016/j.indcrop.2023.116275

Janković BŽ, Manić NG, Popović M, Cvetković S, Dželetović Ž, Stojiljković D. Kinetic and thermodynamic compensation phenomena in C3 and C4 energy crops pyrolysis: Implications on reaction mechanisms and product distributions. in Industrial Crops and Products. 2023;194.
doi:10.1016/j.indcrop.2023.116275 .

Janković, Bojan Ž., Manić, Nebojša G., Popović, Mina, Cvetković, Slobodan, Dželetović, Željko, Stojiljković, Dragoslava, "Kinetic and thermodynamic compensation phenomena in C3 and C4 energy crops pyrolysis: Implications on reaction mechanisms and product distributions" in Industrial Crops and Products, 194 (2023),
https://doi.org/10.1016/j.indcrop.2023.116275 . .

TY  - JOUR
AU  - Janković, Bojan Ž.
AU  - Manić, Nebojša
AU  - Perović, Ivana M.
AU  - Vujković, Milica
AU  - Zdolšek, Nikola
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10739
AB  - In recent years, deep eutectic solvents (DESs) have attracted considerable attention, and they have been applied in many fields, such as dissolution and separation, electrochemistry, materials preparation, reaction, and catalysis. In this paper, a detailed thermal decomposition mechanism of DES-type II (consisting choline chloride (ChCl) and magnesium chloride hexahydrate (MgCl2·6H2O) in a molar ratio 2:1 (MgCl2·6H2O-[Ch]Cl)) was explained, using thermal analysis techniques. Physicochemical clarification of overall thermal decomposition mechanism and the influence of enthalpy–entropy compensation (EEC) on reactions mechanism emerging are presented for the first time, in favor of this DES type. In the kinetic analysis of the decomposition process, two approaches were used: model-free (inverse) and model-based (direct) methods. It was found that thermodynamic principles in the form of EEC are the source of kinetic compensation effect (KCE) during MgCl2·6H2O-[Ch]Cl thermal decomposition, as a consequence of the effects of molecular interactions. Key phenomenon in the complex multiple step process represents a parallel dehydration steps of MgCl2·6H2O in DES, leading to formation of intermediates, such as [MgCl1(H2O)5]1+ and [MgCl2(H2O)4]. It was established that formation of final products (Mg(OH)2 and MgOHCl) requires a higher expenditure of energy to overcome a high potential barrier, where reaction system compensates this energy via hydrogen bonding disruption. This was confirmed by the identification of a specific ‘oscillator’, flagged as Hsingle bondOsingle bondH···Cl hydrogen bond donating system of the energy (“heat bath”). All kinetic parameters and mechanisms of individual reaction steps were confirmed by numerical optimization of the process and modulated dynamic predictions.
T2  - Journal of Molecular Liquids
T1  - Thermal decomposition kinetics of deep eutectic solvent (DES) based on choline chloride and magnesium chloride hexahydrate: New details on the reaction mechanism and enthalpy–entropy compensation (EEC)
VL  - 374
SP  - 121274
DO  - 10.1016/j.molliq.2023.121274
ER  - 

@article{
author = "Janković, Bojan Ž. and Manić, Nebojša and Perović, Ivana M. and Vujković, Milica and Zdolšek, Nikola",
year = "2023",
abstract = "In recent years, deep eutectic solvents (DESs) have attracted considerable attention, and they have been applied in many fields, such as dissolution and separation, electrochemistry, materials preparation, reaction, and catalysis. In this paper, a detailed thermal decomposition mechanism of DES-type II (consisting choline chloride (ChCl) and magnesium chloride hexahydrate (MgCl2·6H2O) in a molar ratio 2:1 (MgCl2·6H2O-[Ch]Cl)) was explained, using thermal analysis techniques. Physicochemical clarification of overall thermal decomposition mechanism and the influence of enthalpy–entropy compensation (EEC) on reactions mechanism emerging are presented for the first time, in favor of this DES type. In the kinetic analysis of the decomposition process, two approaches were used: model-free (inverse) and model-based (direct) methods. It was found that thermodynamic principles in the form of EEC are the source of kinetic compensation effect (KCE) during MgCl2·6H2O-[Ch]Cl thermal decomposition, as a consequence of the effects of molecular interactions. Key phenomenon in the complex multiple step process represents a parallel dehydration steps of MgCl2·6H2O in DES, leading to formation of intermediates, such as [MgCl1(H2O)5]1+ and [MgCl2(H2O)4]. It was established that formation of final products (Mg(OH)2 and MgOHCl) requires a higher expenditure of energy to overcome a high potential barrier, where reaction system compensates this energy via hydrogen bonding disruption. This was confirmed by the identification of a specific ‘oscillator’, flagged as Hsingle bondOsingle bondH···Cl hydrogen bond donating system of the energy (“heat bath”). All kinetic parameters and mechanisms of individual reaction steps were confirmed by numerical optimization of the process and modulated dynamic predictions.",
journal = "Journal of Molecular Liquids",
title = "Thermal decomposition kinetics of deep eutectic solvent (DES) based on choline chloride and magnesium chloride hexahydrate: New details on the reaction mechanism and enthalpy–entropy compensation (EEC)",
volume = "374",
pages = "121274",
doi = "10.1016/j.molliq.2023.121274"
}

Janković, B. Ž., Manić, N., Perović, I. M., Vujković, M.,& Zdolšek, N.. (2023). Thermal decomposition kinetics of deep eutectic solvent (DES) based on choline chloride and magnesium chloride hexahydrate: New details on the reaction mechanism and enthalpy–entropy compensation (EEC). in Journal of Molecular Liquids, 374, 121274.
https://doi.org/10.1016/j.molliq.2023.121274

Janković BŽ, Manić N, Perović IM, Vujković M, Zdolšek N. Thermal decomposition kinetics of deep eutectic solvent (DES) based on choline chloride and magnesium chloride hexahydrate: New details on the reaction mechanism and enthalpy–entropy compensation (EEC). in Journal of Molecular Liquids. 2023;374:121274.
doi:10.1016/j.molliq.2023.121274 .

Janković, Bojan Ž., Manić, Nebojša, Perović, Ivana M., Vujković, Milica, Zdolšek, Nikola, "Thermal decomposition kinetics of deep eutectic solvent (DES) based on choline chloride and magnesium chloride hexahydrate: New details on the reaction mechanism and enthalpy–entropy compensation (EEC)" in Journal of Molecular Liquids, 374 (2023):121274,
https://doi.org/10.1016/j.molliq.2023.121274 . .

TY  - JOUR
AU  - Dojčinović, Milena
AU  - Vasiljević, Zorka
AU  - Rakočević, Lazar
AU  - Pavlović, Vera P.
AU  - Ammar-Merah, Souad
AU  - Vujančević, Jelena
AU  - Nikolić, Maria Vesna
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10620
AB  - Temperature- and humidity-sensing properties were evaluated of NixMg1-x spinel ferrites (0 ≤ x ≤ 1) synthesized by a sol-gel combustion method using citric acid as fuel and nitrate ions as oxidizing agents. After the exothermic reaction, amorphous powders were calcined at 700 °C ollowed by characterization with XRD, FTIR, XPS, EDS and Raman spectroscopy and FESEM icroscopy. Synthesized powders were tested as humidity- and temperature-sensing materials in the form of thick films on interdigitated electrodes on alumina substrate in a climatic chamber. The physicochemical investigation of synthesized materials revealed a cubic spinel Fd3m phase, nanosized but agglomerated particles with a partially to completely inverse spinel structure with increasing Ni content. Ni0.1Mg0.9Fe2O4 showed the highest material constant (B30,90) value of 3747 K and temperature sensitivity (α) of −4.08%/K compared to pure magnesium ferrite (B30,90 value of 3426 K and α of −3.73%/K) and the highest average sensitivity towards humidity of 922 kΩ/%RH in the relative humidity (RH) range of 40–90% at the working temperature of 25 °C.
T2  - Chemosensors
T1  - Humidity and Temperature Sensing of Mixed Nickel–Magnesium Spinel Ferrites
VL  - 11
IS  - 1
SP  - 34
DO  - 10.3390/chemosensors11010034
ER  - 

@article{
author = "Dojčinović, Milena and Vasiljević, Zorka and Rakočević, Lazar and Pavlović, Vera P. and Ammar-Merah, Souad and Vujančević, Jelena and Nikolić, Maria Vesna",
year = "2023",
abstract = "Temperature- and humidity-sensing properties were evaluated of NixMg1-x spinel ferrites (0 ≤ x ≤ 1) synthesized by a sol-gel combustion method using citric acid as fuel and nitrate ions as oxidizing agents. After the exothermic reaction, amorphous powders were calcined at 700 °C ollowed by characterization with XRD, FTIR, XPS, EDS and Raman spectroscopy and FESEM icroscopy. Synthesized powders were tested as humidity- and temperature-sensing materials in the form of thick films on interdigitated electrodes on alumina substrate in a climatic chamber. The physicochemical investigation of synthesized materials revealed a cubic spinel Fd3m phase, nanosized but agglomerated particles with a partially to completely inverse spinel structure with increasing Ni content. Ni0.1Mg0.9Fe2O4 showed the highest material constant (B30,90) value of 3747 K and temperature sensitivity (α) of −4.08%/K compared to pure magnesium ferrite (B30,90 value of 3426 K and α of −3.73%/K) and the highest average sensitivity towards humidity of 922 kΩ/%RH in the relative humidity (RH) range of 40–90% at the working temperature of 25 °C.",
journal = "Chemosensors",
title = "Humidity and Temperature Sensing of Mixed Nickel–Magnesium Spinel Ferrites",
volume = "11",
number = "1",
pages = "34",
doi = "10.3390/chemosensors11010034"
}

Dojčinović, M., Vasiljević, Z., Rakočević, L., Pavlović, V. P., Ammar-Merah, S., Vujančević, J.,& Nikolić, M. V.. (2023). Humidity and Temperature Sensing of Mixed Nickel–Magnesium Spinel Ferrites. in Chemosensors, 11(1), 34.
https://doi.org/10.3390/chemosensors11010034

Dojčinović M, Vasiljević Z, Rakočević L, Pavlović VP, Ammar-Merah S, Vujančević J, Nikolić MV. Humidity and Temperature Sensing of Mixed Nickel–Magnesium Spinel Ferrites. in Chemosensors. 2023;11(1):34.
doi:10.3390/chemosensors11010034 .

Dojčinović, Milena, Vasiljević, Zorka, Rakočević, Lazar, Pavlović, Vera P., Ammar-Merah, Souad, Vujančević, Jelena, Nikolić, Maria Vesna, "Humidity and Temperature Sensing of Mixed Nickel–Magnesium Spinel Ferrites" in Chemosensors, 11, no. 1 (2023):34,
https://doi.org/10.3390/chemosensors11010034 . .

TY  - JOUR
AU  - Bajc, Tamara
AU  - Kostadinović, Danka
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11549
AB  - The Republic of Serbia has a significant potential for the electricity production from solar energy, namely the floating photovoltaic (PV) systems, which are not exploited enough. Although there is a large interest in floating photovoltaic systems (FPVS) worldwide, studies related to the assessment of FPVS potential in this part of Europe have not been performed yet. This paper investigates, for the first time, the possibility of implementation of the FPVS on the six largest Serbian lakes and demonstrates the impact of geographical location on the energy output of the FPVS for the selected locations. The possibility of implementation is studied by simulating the energy output of FPVS using "PVGIS" tool. Energy production from the proposed FPVS, for selected locations, is discussed on a monthly and yearly basis. Installment of the FPVS on these water bodies can produce up to 8959 kWh of energy, while saves 164⋅106 m3/year of water from evaporation at the same time. In addition, the annual reduction of carbon dioxide emissions was analyzed and found to be up to 6.34 tons per year, which further implies with carbon credit potential of up to 9741 € in 20 years period. Drawn conclusions provides better understanding of FPVS and their applicability in the Republic of Serbia to ensure a sustainable, ecological friendly, secure and reliable supply of green energy, and further the used approach can be easily applied in other countries with similar geographical characteristics.
T2  - Journal of Cleaner Production
T1  - Potential of usage of the floating photovoltaic systems on natural and artificial lakes in the Republic of Serbia
VL  - 422
SP  - 138598
DO  - 10.1016/j.jclepro.2023.138598
ER  - 

@article{
author = "Bajc, Tamara and Kostadinović, Danka",
year = "2023",
abstract = "The Republic of Serbia has a significant potential for the electricity production from solar energy, namely the floating photovoltaic (PV) systems, which are not exploited enough. Although there is a large interest in floating photovoltaic systems (FPVS) worldwide, studies related to the assessment of FPVS potential in this part of Europe have not been performed yet. This paper investigates, for the first time, the possibility of implementation of the FPVS on the six largest Serbian lakes and demonstrates the impact of geographical location on the energy output of the FPVS for the selected locations. The possibility of implementation is studied by simulating the energy output of FPVS using "PVGIS" tool. Energy production from the proposed FPVS, for selected locations, is discussed on a monthly and yearly basis. Installment of the FPVS on these water bodies can produce up to 8959 kWh of energy, while saves 164⋅106 m3/year of water from evaporation at the same time. In addition, the annual reduction of carbon dioxide emissions was analyzed and found to be up to 6.34 tons per year, which further implies with carbon credit potential of up to 9741 € in 20 years period. Drawn conclusions provides better understanding of FPVS and their applicability in the Republic of Serbia to ensure a sustainable, ecological friendly, secure and reliable supply of green energy, and further the used approach can be easily applied in other countries with similar geographical characteristics.",
journal = "Journal of Cleaner Production",
title = "Potential of usage of the floating photovoltaic systems on natural and artificial lakes in the Republic of Serbia",
volume = "422",
pages = "138598",
doi = "10.1016/j.jclepro.2023.138598"
}

Bajc, T.,& Kostadinović, D.. (2023). Potential of usage of the floating photovoltaic systems on natural and artificial lakes in the Republic of Serbia. in Journal of Cleaner Production, 422, 138598.
https://doi.org/10.1016/j.jclepro.2023.138598

Bajc T, Kostadinović D. Potential of usage of the floating photovoltaic systems on natural and artificial lakes in the Republic of Serbia. in Journal of Cleaner Production. 2023;422:138598.
doi:10.1016/j.jclepro.2023.138598 .

Bajc, Tamara, Kostadinović, Danka, "Potential of usage of the floating photovoltaic systems on natural and artificial lakes in the Republic of Serbia" in Journal of Cleaner Production, 422 (2023):138598,
https://doi.org/10.1016/j.jclepro.2023.138598 . .

TY  - JOUR
AU  - Pijović, Milena
AU  - Manić, Nebojša G.
AU  - Vasić Anićijević, Dragana D.
AU  - Krstić, Aleksandar
AU  - Mitrić, Miodrag
AU  - Matić, Tamara
AU  - Janković, Bojan Ž.
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10077
AB  - Pyrolytic tire (PT) chars were first produced from waste car tires (WCT) through carbonization process at 800 °C, for different retention times. Then, best PT-char sample by its physicochemical properties (WCT 800(1 h)) was further tested for its ability to adsorb Rhodamine B (RhB) dye from aqueous solutions. Structural characterization of synthesized material showed existence of graphene-based material, with average pore diameter of 22.8 nm and specific surface area of 55.8 m2·g−1. Obtained carbon material meets specifications of commercial carbon black (CB). The yield of 33.6% of CB recovered has been achieved. Under the optimal conditions, 99.57% of RhB was removed. Adsorption of RhB obeys pseudo second-order model and Langmuir isotherm model. DFT (the density functional theory) was revealed that effective bonding of RhB onto WCT 800 originates from π-electron interactions with aromatic moieties and chemical (or at least the electrostatic) interactions, between positive nitrogen and electron-rich surface groups.
T2  - Diamond and Related Materials
T1  - Simple and effective one-step production of high-quality mesoporous pyrolytic char from waste tires: Rhodamine B adsorption kinetics and density functional theory (DFT) study
VL  - 121
SP  - 108768
DO  - 10.1016/j.diamond.2021.108768
ER  - 

@article{
author = "Pijović, Milena and Manić, Nebojša G. and Vasić Anićijević, Dragana D. and Krstić, Aleksandar and Mitrić, Miodrag and Matić, Tamara and Janković, Bojan Ž.",
year = "2022",
abstract = "Pyrolytic tire (PT) chars were first produced from waste car tires (WCT) through carbonization process at 800 °C, for different retention times. Then, best PT-char sample by its physicochemical properties (WCT 800(1 h)) was further tested for its ability to adsorb Rhodamine B (RhB) dye from aqueous solutions. Structural characterization of synthesized material showed existence of graphene-based material, with average pore diameter of 22.8 nm and specific surface area of 55.8 m2·g−1. Obtained carbon material meets specifications of commercial carbon black (CB). The yield of 33.6% of CB recovered has been achieved. Under the optimal conditions, 99.57% of RhB was removed. Adsorption of RhB obeys pseudo second-order model and Langmuir isotherm model. DFT (the density functional theory) was revealed that effective bonding of RhB onto WCT 800 originates from π-electron interactions with aromatic moieties and chemical (or at least the electrostatic) interactions, between positive nitrogen and electron-rich surface groups.",
journal = "Diamond and Related Materials",
title = "Simple and effective one-step production of high-quality mesoporous pyrolytic char from waste tires: Rhodamine B adsorption kinetics and density functional theory (DFT) study",
volume = "121",
pages = "108768",
doi = "10.1016/j.diamond.2021.108768"
}

Pijović, M., Manić, N. G., Vasić Anićijević, D. D., Krstić, A., Mitrić, M., Matić, T.,& Janković, B. Ž.. (2022). Simple and effective one-step production of high-quality mesoporous pyrolytic char from waste tires: Rhodamine B adsorption kinetics and density functional theory (DFT) study. in Diamond and Related Materials, 121, 108768.
https://doi.org/10.1016/j.diamond.2021.108768

Pijović M, Manić NG, Vasić Anićijević DD, Krstić A, Mitrić M, Matić T, Janković BŽ. Simple and effective one-step production of high-quality mesoporous pyrolytic char from waste tires: Rhodamine B adsorption kinetics and density functional theory (DFT) study. in Diamond and Related Materials. 2022;121:108768.
doi:10.1016/j.diamond.2021.108768 .

Pijović, Milena, Manić, Nebojša G., Vasić Anićijević, Dragana D., Krstić, Aleksandar, Mitrić, Miodrag, Matić, Tamara, Janković, Bojan Ž., "Simple and effective one-step production of high-quality mesoporous pyrolytic char from waste tires: Rhodamine B adsorption kinetics and density functional theory (DFT) study" in Diamond and Related Materials, 121 (2022):108768,
https://doi.org/10.1016/j.diamond.2021.108768 . .

TY  - JOUR
AU  - Janićijević, Aleksandra
AU  - Pavlović, Vera P.
AU  - Kovačević, Danijela
AU  - Perić, Marko
AU  - Vlahović, Branislav
AU  - Pavlović, Vladimir B.
AU  - Filipović, Suzana
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10269
AB  - The rise of innovation in the electrical industry is driven by the controlled design of new materials. The hybrid materials based on magnetite/nanocellulose are highly interesting due to their various applications in medicine, ecology, catalysis and electronics. In this study, the structure and morphology of nanocellulose/magnetite hybrid nanomaterials were investigated. The effect of nanocellulose loading on the crystal structure of synthesized composites was investigated by XRD and FTIR methods. The presented study reveals that the interaction between the cellulose and magnetic nanoparticles depends on the nanocellulose content. Further, a transition from cellulose II to cellulose I allomorph is observed. SEM and EDS are employed to determine the variation in morphology with changes in component concentrations. By the calculation of magnetic interactions between adjacent Fe3+ and Fe2+ ions within composites, it is determined that ferromagnetic coupling predominates.
T2  - Polymers
T1  - Structural Characterization of Nanocellulose/Fe3O4 Hybrid Nanomaterials
VL  - 14
IS  - 9
SP  - 1819
DO  - 10.3390/polym14091819
ER  - 

@article{
author = "Janićijević, Aleksandra and Pavlović, Vera P. and Kovačević, Danijela and Perić, Marko and Vlahović, Branislav and Pavlović, Vladimir B. and Filipović, Suzana",
year = "2022",
abstract = "The rise of innovation in the electrical industry is driven by the controlled design of new materials. The hybrid materials based on magnetite/nanocellulose are highly interesting due to their various applications in medicine, ecology, catalysis and electronics. In this study, the structure and morphology of nanocellulose/magnetite hybrid nanomaterials were investigated. The effect of nanocellulose loading on the crystal structure of synthesized composites was investigated by XRD and FTIR methods. The presented study reveals that the interaction between the cellulose and magnetic nanoparticles depends on the nanocellulose content. Further, a transition from cellulose II to cellulose I allomorph is observed. SEM and EDS are employed to determine the variation in morphology with changes in component concentrations. By the calculation of magnetic interactions between adjacent Fe3+ and Fe2+ ions within composites, it is determined that ferromagnetic coupling predominates.",
journal = "Polymers",
title = "Structural Characterization of Nanocellulose/Fe3O4 Hybrid Nanomaterials",
volume = "14",
number = "9",
pages = "1819",
doi = "10.3390/polym14091819"
}

Janićijević, A., Pavlović, V. P., Kovačević, D., Perić, M., Vlahović, B., Pavlović, V. B.,& Filipović, S.. (2022). Structural Characterization of Nanocellulose/Fe3O4 Hybrid Nanomaterials. in Polymers, 14(9), 1819.
https://doi.org/10.3390/polym14091819

Janićijević A, Pavlović VP, Kovačević D, Perić M, Vlahović B, Pavlović VB, Filipović S. Structural Characterization of Nanocellulose/Fe3O4 Hybrid Nanomaterials. in Polymers. 2022;14(9):1819.
doi:10.3390/polym14091819 .

Janićijević, Aleksandra, Pavlović, Vera P., Kovačević, Danijela, Perić, Marko, Vlahović, Branislav, Pavlović, Vladimir B., Filipović, Suzana, "Structural Characterization of Nanocellulose/Fe3O4 Hybrid Nanomaterials" in Polymers, 14, no. 9 (2022):1819,
https://doi.org/10.3390/polym14091819 . .

TY  - JOUR
AU  - Hasan, Mohammad Sakib
AU  - Svorcan, Jelena M.
AU  - Simonović, Aleksandar M.
AU  - Mirkov, Nikola S.
AU  - Kostić, Olivera P.
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10306
AB  - The ability of flying continuously over prolonged periods of time has become target of numerous research studies performed in recent years in both the fields of civil aviation and unmanned drones. High altitude platform stations are aircrafts that can operate for an extended period of time at altitudes 17 km above sea level and higher. The aim of this paper is to design and optimize a wing for such platforms and computationally investigate its aerodynamic performance. For that purpose, two-objective genetic algorithm, class shape transformation and panel method were combined and used to define different airfoils with the highest lift-to-drag ratio and maximal lift coefficient. Once the most suitable airfoil was chosen, polyhedral half-wing was modeled and its aerodynamic performances were estimated using the CFD approach. Flow simulations of transitional flow at various angles-of-attack were realized in ANSYS FLUENT and various quantitative and qualitative results are presented, such as aerodynamic coefficient curves and flow visualizations. In the end, daily mission of the aircraft is simulated and its energy requirement is estimated. In order to be able to cruise above Serbia in July, an aircraft weighing 150 kg must accumulate 17 kWh of solar energy per day.
T2  - Thermal Science
T1  - Optimal airfoil design and wing analysis for solar-powered high altitude platform station
VL  - 26
IS  - 3 Part A
SP  - 2163
EP  - 2175
DO  - 10.2298/TSCI210419241S
ER  - 

@article{
author = "Hasan, Mohammad Sakib and Svorcan, Jelena M. and Simonović, Aleksandar M. and Mirkov, Nikola S. and Kostić, Olivera P.",
year = "2022",
abstract = "The ability of flying continuously over prolonged periods of time has become target of numerous research studies performed in recent years in both the fields of civil aviation and unmanned drones. High altitude platform stations are aircrafts that can operate for an extended period of time at altitudes 17 km above sea level and higher. The aim of this paper is to design and optimize a wing for such platforms and computationally investigate its aerodynamic performance. For that purpose, two-objective genetic algorithm, class shape transformation and panel method were combined and used to define different airfoils with the highest lift-to-drag ratio and maximal lift coefficient. Once the most suitable airfoil was chosen, polyhedral half-wing was modeled and its aerodynamic performances were estimated using the CFD approach. Flow simulations of transitional flow at various angles-of-attack were realized in ANSYS FLUENT and various quantitative and qualitative results are presented, such as aerodynamic coefficient curves and flow visualizations. In the end, daily mission of the aircraft is simulated and its energy requirement is estimated. In order to be able to cruise above Serbia in July, an aircraft weighing 150 kg must accumulate 17 kWh of solar energy per day.",
journal = "Thermal Science",
title = "Optimal airfoil design and wing analysis for solar-powered high altitude platform station",
volume = "26",
number = "3 Part A",
pages = "2163-2175",
doi = "10.2298/TSCI210419241S"
}

Hasan, M. S., Svorcan, J. M., Simonović, A. M., Mirkov, N. S.,& Kostić, O. P.. (2022). Optimal airfoil design and wing analysis for solar-powered high altitude platform station. in Thermal Science, 26(3 Part A), 2163-2175.
https://doi.org/10.2298/TSCI210419241S

Hasan MS, Svorcan JM, Simonović AM, Mirkov NS, Kostić OP. Optimal airfoil design and wing analysis for solar-powered high altitude platform station. in Thermal Science. 2022;26(3 Part A):2163-2175.
doi:10.2298/TSCI210419241S .

Hasan, Mohammad Sakib, Svorcan, Jelena M., Simonović, Aleksandar M., Mirkov, Nikola S., Kostić, Olivera P., "Optimal airfoil design and wing analysis for solar-powered high altitude platform station" in Thermal Science, 26, no. 3 Part A (2022):2163-2175,
https://doi.org/10.2298/TSCI210419241S . .

TY  - CONF
AU  - Manić, Nebojša
AU  - Balać, Martina
AU  - Stojiljković, Dragoslava
AU  - Janković, Bojan
AU  - Stanisavljević, Zorana
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12623
AB  - Rapid industrialization together with issues over the depletion of traditional fuel supplies and environmental concerns have prompted researchers to look into developing an environmentally safe, renewable, costeffective, and long-term alternative energy source. Agriculture biomass is recognized as a potentially viable solution for utilization in the energy sector for achieving the sustainable and long-term transformation into energy and/or fuels. This type of biomass is generated in large amounts across the world, which may be converted to biofuels using a variety of methods. However, concerns related to the competing agricultural biomass applications need to be thoroughly examined taking into account both the short- and long-term actuality, and its impact on the soil by conversion to biofuels. According to common practice agriculturalbiomass is dominantly used for biogas production due to its availability and simplicity of handling. Based on all mentioned the assessment of the most applicable raw materials for biogas production is essential for achievingthe sustainability criteria and promoting using biomass for energy production. In this paper, a theoretical approach was applied for experimentally obtained results of proximate and ultimate analysis of different biomass materials as a possible feedstock for biomass production. Based on data of proximate and ultimate analysis the theoretical biomechanical methane potential (TBMP) for considered samples was calculated. According to obtained results, agricultural biomass shows validity of use for biogas production considering the fulfillment of the raw material minimum quantity.
PB  - Belgrade : Innovation Center of Faculty of Mechanical Engineering
C3  - International Conference of Experimental and Numerical Investigations and New Technologies : Book of abstracts
T1  - Theoretical assesment of raw materials for sustainable biogas production
SP  - 35
EP  - 35
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12623
ER  - 

@conference{
author = "Manić, Nebojša and Balać, Martina and Stojiljković, Dragoslava and Janković, Bojan and Stanisavljević, Zorana",
year = "2022",
abstract = "Rapid industrialization together with issues over the depletion of traditional fuel supplies and environmental concerns have prompted researchers to look into developing an environmentally safe, renewable, costeffective, and long-term alternative energy source. Agriculture biomass is recognized as a potentially viable solution for utilization in the energy sector for achieving the sustainable and long-term transformation into energy and/or fuels. This type of biomass is generated in large amounts across the world, which may be converted to biofuels using a variety of methods. However, concerns related to the competing agricultural biomass applications need to be thoroughly examined taking into account both the short- and long-term actuality, and its impact on the soil by conversion to biofuels. According to common practice agriculturalbiomass is dominantly used for biogas production due to its availability and simplicity of handling. Based on all mentioned the assessment of the most applicable raw materials for biogas production is essential for achievingthe sustainability criteria and promoting using biomass for energy production. In this paper, a theoretical approach was applied for experimentally obtained results of proximate and ultimate analysis of different biomass materials as a possible feedstock for biomass production. Based on data of proximate and ultimate analysis the theoretical biomechanical methane potential (TBMP) for considered samples was calculated. According to obtained results, agricultural biomass shows validity of use for biogas production considering the fulfillment of the raw material minimum quantity.",
publisher = "Belgrade : Innovation Center of Faculty of Mechanical Engineering",
journal = "International Conference of Experimental and Numerical Investigations and New Technologies : Book of abstracts",
title = "Theoretical assesment of raw materials for sustainable biogas production",
pages = "35-35",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12623"
}

Manić, N., Balać, M., Stojiljković, D., Janković, B.,& Stanisavljević, Z.. (2022). Theoretical assesment of raw materials for sustainable biogas production. in International Conference of Experimental and Numerical Investigations and New Technologies : Book of abstracts
Belgrade : Innovation Center of Faculty of Mechanical Engineering., 35-35.
https://hdl.handle.net/21.15107/rcub_vinar_12623

Manić N, Balać M, Stojiljković D, Janković B, Stanisavljević Z. Theoretical assesment of raw materials for sustainable biogas production. in International Conference of Experimental and Numerical Investigations and New Technologies : Book of abstracts. 2022;:35-35.
https://hdl.handle.net/21.15107/rcub_vinar_12623 .

Manić, Nebojša, Balać, Martina, Stojiljković, Dragoslava, Janković, Bojan, Stanisavljević, Zorana, "Theoretical assesment of raw materials for sustainable biogas production" in International Conference of Experimental and Numerical Investigations and New Technologies : Book of abstracts (2022):35-35,
https://hdl.handle.net/21.15107/rcub_vinar_12623 .

TY  - CONF
AU  - Radojević, Miloš
AU  - Janković, Bojan
AU  - Manić, Nebojša
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12624
AB  - This work provides a novel methodology for the comprehensive evolved gas analysisperformed on a lab scale level during the biomass thermal degradation experimental tests.TGA – MS coupling allows accurate correlation between molecular ion peak and fragmentpeaks to the corresponding mass loss rates from DTG curves. Within the proposed semiquantitativeanalysis, MS spectra were interpreted through the comparative analysis ofcompound fragments and of the compound itself, where the single atomic mass unit wasidentified by multiple compounds exhibition [1]. It was shown that by this procedure whichinvolves overlapping multiple curves supervising, the identification of gases in the volatilescomplex scheme becomes more simplified. The simplified scheme for the proposedmethodology with major steps necessary to be performed is presented in Figure 1. By setting up semi-quantitative formulas, easy and reliable calculations of gaseousproducts yield and syngas energy capacities are possible to achieve. The obtained results byproposed methodology for wheat straw sample is given in Table 1.
PB  - The Japan Society of Calorimetry and Thermal Analysis
C3  - Virtual Intercontinental Assembly on Calorimetry and Thermal Analysis (VIACTA2022) : “The 9th international and 11th Japan - China Joint Symposium on Calorimetry and Thermal Analysis” (CATS-2022) : Book of Abstracts
T1  - Application of TGA-MS measurements for evolved gas analysis during pyrolysis process of various biomass
SP  - 64
EP  - 64
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12624
ER  - 

@conference{
author = "Radojević, Miloš and Janković, Bojan and Manić, Nebojša",
year = "2022",
abstract = "This work provides a novel methodology for the comprehensive evolved gas analysisperformed on a lab scale level during the biomass thermal degradation experimental tests.TGA – MS coupling allows accurate correlation between molecular ion peak and fragmentpeaks to the corresponding mass loss rates from DTG curves. Within the proposed semiquantitativeanalysis, MS spectra were interpreted through the comparative analysis ofcompound fragments and of the compound itself, where the single atomic mass unit wasidentified by multiple compounds exhibition [1]. It was shown that by this procedure whichinvolves overlapping multiple curves supervising, the identification of gases in the volatilescomplex scheme becomes more simplified. The simplified scheme for the proposedmethodology with major steps necessary to be performed is presented in Figure 1. By setting up semi-quantitative formulas, easy and reliable calculations of gaseousproducts yield and syngas energy capacities are possible to achieve. The obtained results byproposed methodology for wheat straw sample is given in Table 1.",
publisher = "The Japan Society of Calorimetry and Thermal Analysis",
journal = "Virtual Intercontinental Assembly on Calorimetry and Thermal Analysis (VIACTA2022) : “The 9th international and 11th Japan - China Joint Symposium on Calorimetry and Thermal Analysis” (CATS-2022) : Book of Abstracts",
title = "Application of TGA-MS measurements for evolved gas analysis during pyrolysis process of various biomass",
pages = "64-64",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12624"
}

Radojević, M., Janković, B.,& Manić, N.. (2022). Application of TGA-MS measurements for evolved gas analysis during pyrolysis process of various biomass. in Virtual Intercontinental Assembly on Calorimetry and Thermal Analysis (VIACTA2022) : “The 9th international and 11th Japan - China Joint Symposium on Calorimetry and Thermal Analysis” (CATS-2022) : Book of Abstracts
The Japan Society of Calorimetry and Thermal Analysis., 64-64.
https://hdl.handle.net/21.15107/rcub_vinar_12624

Radojević M, Janković B, Manić N. Application of TGA-MS measurements for evolved gas analysis during pyrolysis process of various biomass. in Virtual Intercontinental Assembly on Calorimetry and Thermal Analysis (VIACTA2022) : “The 9th international and 11th Japan - China Joint Symposium on Calorimetry and Thermal Analysis” (CATS-2022) : Book of Abstracts. 2022;:64-64.
https://hdl.handle.net/21.15107/rcub_vinar_12624 .

Radojević, Miloš, Janković, Bojan, Manić, Nebojša, "Application of TGA-MS measurements for evolved gas analysis during pyrolysis process of various biomass" in Virtual Intercontinental Assembly on Calorimetry and Thermal Analysis (VIACTA2022) : “The 9th international and 11th Japan - China Joint Symposium on Calorimetry and Thermal Analysis” (CATS-2022) : Book of Abstracts (2022):64-64,
https://hdl.handle.net/21.15107/rcub_vinar_12624 .

TY  - JOUR
AU  - Janković, Bojan Ž.
AU  - Manić, Nebojša G.
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10200
AB  - The pyrolysis of [4-(hydroxymethyl)phenoxymethyl]polystyrene (Wang) resin was studied by dynamic simultaneous thermogravimetric analysis (TGA) and derivative thermogravimetry techniques. The studied resin is used as the most commonly polymer supports in the peptide synthesis. A developed experimental master plots (exp-MP) model is presented that can be used to describe in more detail the pyrolysis of the resin established upon 4-hydroxybenzyl alcohol (PHB) on polystyrene, occurring throughout TGA experiments. This model assumes that the Wang resin is pyrolyzed through three parallel independent reaction steps, whereby their separation was performed through deconvolution procedure of the complex conversion rate curves. The mechanistic nature of each stage of Wang resin pyrolysis was explained by applying a combination of kinetic models such as diffusion mechanism, random nucleation and subsequent growth and chemical reactions mechanisms. The kinetic triplet parameters obtained in the present paper were then compared with those available in the literature. Within this kinetic study, the fraction distribution analysis (via distributed reactivity model) was performed, enabling reliable prediction of liquid products produced during the pyrolysis of the solid support of the Wang resin. Graphical abstract: [Figure not available: see fulltext.] © 2022, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.
T2  - Polymer Bulletin
T1  - Pyrolysis kinetics of [4-(hydroxymethyl)phenoxymethyl]polystyrene (Wang) resin using master-plot method and distributed reactivity model
SP  - Early view
DO  - 10.1007/s00289-022-04159-5
ER  - 

@article{
author = "Janković, Bojan Ž. and Manić, Nebojša G.",
year = "2022",
abstract = "The pyrolysis of [4-(hydroxymethyl)phenoxymethyl]polystyrene (Wang) resin was studied by dynamic simultaneous thermogravimetric analysis (TGA) and derivative thermogravimetry techniques. The studied resin is used as the most commonly polymer supports in the peptide synthesis. A developed experimental master plots (exp-MP) model is presented that can be used to describe in more detail the pyrolysis of the resin established upon 4-hydroxybenzyl alcohol (PHB) on polystyrene, occurring throughout TGA experiments. This model assumes that the Wang resin is pyrolyzed through three parallel independent reaction steps, whereby their separation was performed through deconvolution procedure of the complex conversion rate curves. The mechanistic nature of each stage of Wang resin pyrolysis was explained by applying a combination of kinetic models such as diffusion mechanism, random nucleation and subsequent growth and chemical reactions mechanisms. The kinetic triplet parameters obtained in the present paper were then compared with those available in the literature. Within this kinetic study, the fraction distribution analysis (via distributed reactivity model) was performed, enabling reliable prediction of liquid products produced during the pyrolysis of the solid support of the Wang resin. Graphical abstract: [Figure not available: see fulltext.] © 2022, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.",
journal = "Polymer Bulletin",
title = "Pyrolysis kinetics of [4-(hydroxymethyl)phenoxymethyl]polystyrene (Wang) resin using master-plot method and distributed reactivity model",
pages = "Early view",
doi = "10.1007/s00289-022-04159-5"
}

Janković, B. Ž.,& Manić, N. G.. (2022). Pyrolysis kinetics of [4-(hydroxymethyl)phenoxymethyl]polystyrene (Wang) resin using master-plot method and distributed reactivity model. in Polymer Bulletin, Early view.
https://doi.org/10.1007/s00289-022-04159-5

Janković BŽ, Manić NG. Pyrolysis kinetics of [4-(hydroxymethyl)phenoxymethyl]polystyrene (Wang) resin using master-plot method and distributed reactivity model. in Polymer Bulletin. 2022;:Early view.
doi:10.1007/s00289-022-04159-5 .

Janković, Bojan Ž., Manić, Nebojša G., "Pyrolysis kinetics of [4-(hydroxymethyl)phenoxymethyl]polystyrene (Wang) resin using master-plot method and distributed reactivity model" in Polymer Bulletin (2022):Early view,
https://doi.org/10.1007/s00289-022-04159-5 . .

TY  - JOUR
AU  - Milanović, Mihailo
AU  - Komatina, Mirko
AU  - Janković, Bojan Ž.
AU  - Stojiljković, Dragoslava
AU  - Manić, Nebojša G.
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10221
AB  - Sustainable development and mitigation of the climate changes are one of the main challenges of the circular economy, while the use of food industry residues could make an important contribution in tackling these challenges. In order to improve energy efficiency aspects of the industry residue treatment, generally, the drying process as the first step of the entire processing chain should be further analyzed. Regarding this, a comprehensive kinetic study was performed to provide the detailed mechanism of moisture removal from base raw material. Industrial residues from apple juice production were used for isothermal thermogravimetric analysis in the air atmosphere at different temperatures. Based on experimental data, different kinetic models were applied to determine kinetic parameters and dominant conversion functions. The dependence of the activation energy evaluated by Friedman’s isoconversional method on the conversion degree shows that the drying process is complex one. The mechanism of drying process and corresponding kinetic parameters were determined by multivariate nonlinear regression program (model-based analysis) and checked by modulated isothermal prediction (for quasi-isothermal conditions) and the isothermal prediction (for different isothermal conditions) tests. It was pointed out that temperature-dependent reaction step controlling overall mechanism represents releasing of CO2 which can suppress autocatalytic action of the ethylene, influencing the flavor and texture changes of the apple tissue. Obtained results can be used for prediction of the life-time of studied material, corresponding to selected temperatures and different conversion levels.
T2  - Journal of Thermal Analysis and Calorimetry
T1  - The kinetic study of juice industry residues drying process based on TGA-DTG experimental data
DO  - 10.1007/s10973-022-11289-5
ER  - 

@article{
author = "Milanović, Mihailo and Komatina, Mirko and Janković, Bojan Ž. and Stojiljković, Dragoslava and Manić, Nebojša G.",
year = "2022",
abstract = "Sustainable development and mitigation of the climate changes are one of the main challenges of the circular economy, while the use of food industry residues could make an important contribution in tackling these challenges. In order to improve energy efficiency aspects of the industry residue treatment, generally, the drying process as the first step of the entire processing chain should be further analyzed. Regarding this, a comprehensive kinetic study was performed to provide the detailed mechanism of moisture removal from base raw material. Industrial residues from apple juice production were used for isothermal thermogravimetric analysis in the air atmosphere at different temperatures. Based on experimental data, different kinetic models were applied to determine kinetic parameters and dominant conversion functions. The dependence of the activation energy evaluated by Friedman’s isoconversional method on the conversion degree shows that the drying process is complex one. The mechanism of drying process and corresponding kinetic parameters were determined by multivariate nonlinear regression program (model-based analysis) and checked by modulated isothermal prediction (for quasi-isothermal conditions) and the isothermal prediction (for different isothermal conditions) tests. It was pointed out that temperature-dependent reaction step controlling overall mechanism represents releasing of CO2 which can suppress autocatalytic action of the ethylene, influencing the flavor and texture changes of the apple tissue. Obtained results can be used for prediction of the life-time of studied material, corresponding to selected temperatures and different conversion levels.",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "The kinetic study of juice industry residues drying process based on TGA-DTG experimental data",
doi = "10.1007/s10973-022-11289-5"
}

Milanović, M., Komatina, M., Janković, B. Ž., Stojiljković, D.,& Manić, N. G.. (2022). The kinetic study of juice industry residues drying process based on TGA-DTG experimental data. in Journal of Thermal Analysis and Calorimetry.
https://doi.org/10.1007/s10973-022-11289-5

Milanović M, Komatina M, Janković BŽ, Stojiljković D, Manić NG. The kinetic study of juice industry residues drying process based on TGA-DTG experimental data. in Journal of Thermal Analysis and Calorimetry. 2022;.
doi:10.1007/s10973-022-11289-5 .

Milanović, Mihailo, Komatina, Mirko, Janković, Bojan Ž., Stojiljković, Dragoslava, Manić, Nebojša G., "The kinetic study of juice industry residues drying process based on TGA-DTG experimental data" in Journal of Thermal Analysis and Calorimetry (2022),
https://doi.org/10.1007/s10973-022-11289-5 . .

TY  - JOUR
AU  - Manić, Nebojša G.
AU  - Janković, Bojan Ž.
AU  - Stojiljković, Dragoslava
AU  - Angelopoulos, Panagiotis
AU  - Radojević, Miloš
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10274
AB  - The presented paper deals with the influence of the heating rate on combustion characteristics (reactivity and reactivity evaluation, ignition index (Di), burnout index (Df), the combustion performance index (S), and the combustion stability index (RW)) of the protective coronavirus face masks. Two types of commonly used face masks in different state (new and exploited) were investigated by TG-DTG analysis in an air atmosphere, directly coupled with mass spectrometry (MS). Based on the experimental results, the impact of ultimate and proximate analysis data on the evolved gas analysis (EGA) was discussed. Also, the derived values from thermo-analytical (TA) data were compared with the literature reports, related to individual constitutive face mask materials. According to the performed research, it was established that different maximal reaction rate values at various heating rates indicate the complex nature of coronavirus face mask thermo-oxidative degradation, which is stimulated with carbon oxidation reactions and volatile matter (VM) release. By detailed analysis of obtained TG-DTG profiles, it was established that process takes place through the multiple-step reaction pathways, due to many vigorous radical reactions, causes by polymers degradation. The performed research was done to evaluate the possible utilization of coronavirus waste to energy production and sustainable pandemic environmental risk reduction.
T2  - Journal of Thermal Analysis and Calorimetry
T1  - Thermal characteristics and combustion reactivity of coronavirus face masks using TG-DTG-MS analysis
DO  - 10.1007/s10973-022-11358-9
ER  - 

@article{
author = "Manić, Nebojša G. and Janković, Bojan Ž. and Stojiljković, Dragoslava and Angelopoulos, Panagiotis and Radojević, Miloš",
year = "2022",
abstract = "The presented paper deals with the influence of the heating rate on combustion characteristics (reactivity and reactivity evaluation, ignition index (Di), burnout index (Df), the combustion performance index (S), and the combustion stability index (RW)) of the protective coronavirus face masks. Two types of commonly used face masks in different state (new and exploited) were investigated by TG-DTG analysis in an air atmosphere, directly coupled with mass spectrometry (MS). Based on the experimental results, the impact of ultimate and proximate analysis data on the evolved gas analysis (EGA) was discussed. Also, the derived values from thermo-analytical (TA) data were compared with the literature reports, related to individual constitutive face mask materials. According to the performed research, it was established that different maximal reaction rate values at various heating rates indicate the complex nature of coronavirus face mask thermo-oxidative degradation, which is stimulated with carbon oxidation reactions and volatile matter (VM) release. By detailed analysis of obtained TG-DTG profiles, it was established that process takes place through the multiple-step reaction pathways, due to many vigorous radical reactions, causes by polymers degradation. The performed research was done to evaluate the possible utilization of coronavirus waste to energy production and sustainable pandemic environmental risk reduction.",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "Thermal characteristics and combustion reactivity of coronavirus face masks using TG-DTG-MS analysis",
doi = "10.1007/s10973-022-11358-9"
}

Manić, N. G., Janković, B. Ž., Stojiljković, D., Angelopoulos, P.,& Radojević, M.. (2022). Thermal characteristics and combustion reactivity of coronavirus face masks using TG-DTG-MS analysis. in Journal of Thermal Analysis and Calorimetry.
https://doi.org/10.1007/s10973-022-11358-9

Manić NG, Janković BŽ, Stojiljković D, Angelopoulos P, Radojević M. Thermal characteristics and combustion reactivity of coronavirus face masks using TG-DTG-MS analysis. in Journal of Thermal Analysis and Calorimetry. 2022;.
doi:10.1007/s10973-022-11358-9 .

Manić, Nebojša G., Janković, Bojan Ž., Stojiljković, Dragoslava, Angelopoulos, Panagiotis, Radojević, Miloš, "Thermal characteristics and combustion reactivity of coronavirus face masks using TG-DTG-MS analysis" in Journal of Thermal Analysis and Calorimetry (2022),
https://doi.org/10.1007/s10973-022-11358-9 . .

TY  - JOUR
AU  - Manić, Nebojša G.
AU  - Janković, Bojan Ž.
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10278
AB  - With the increased popularity of using wood stoves for household heating in recent years, numerous experimental research projects have been launched with the goal of generating cleaner and more efficient stove designs. This work is focused on mathematical modeling of combustion process in low-power residential heating appliance (small-scale stove) fuelled by different wood pellets (WP1-Beech (hardwood) and WP2-Pine (softwood)). Kinetic model scheme that encompasses determination of Arrhenius parameters was proposed for applied Finite rate/Eddy Dissipation approach. Types of wood pellets have been combusted on the experimental stand which is equipped with a set of temperature sensors and exhaust analyzer. A comparison of results obtained from combustion in the heating unit has been performed to find relations between established kinetics of devolatilization for various wood pellets and to determine exhaust composition, arising from oxidation reactions. Numerical modeling using computational fluid dynamics (CFD) has been performed for the char and CO oxidations to supplement the experimental results. Due to limitations on installed stove such as poor design, air supply, fume extraction, or heat exchanger can lead to excessive CO emissions or lower energy efficiency. Outcomes show that it is crucial to minimize unused stove volume and to enhance gaseous mixing for reduction of CO emissions, while maintaining sufficiently high temperatures for supporting fast oxidation reactions. Results of comparisons of conducted analyses can be useful in areas related to process optimization and improvement of combustion and devolatilization reaction conditions in the small scale heating units.
T2  - Fuel
T1  - Determination of Arrhenius parameters for advanced kinetic model used in CFD modeling of the wood pellet combustion process
VL  - 323
SP  - 124323
DO  - 10.1016/j.fuel.2022.124323
ER  - 

@article{
author = "Manić, Nebojša G. and Janković, Bojan Ž.",
year = "2022",
abstract = "With the increased popularity of using wood stoves for household heating in recent years, numerous experimental research projects have been launched with the goal of generating cleaner and more efficient stove designs. This work is focused on mathematical modeling of combustion process in low-power residential heating appliance (small-scale stove) fuelled by different wood pellets (WP1-Beech (hardwood) and WP2-Pine (softwood)). Kinetic model scheme that encompasses determination of Arrhenius parameters was proposed for applied Finite rate/Eddy Dissipation approach. Types of wood pellets have been combusted on the experimental stand which is equipped with a set of temperature sensors and exhaust analyzer. A comparison of results obtained from combustion in the heating unit has been performed to find relations between established kinetics of devolatilization for various wood pellets and to determine exhaust composition, arising from oxidation reactions. Numerical modeling using computational fluid dynamics (CFD) has been performed for the char and CO oxidations to supplement the experimental results. Due to limitations on installed stove such as poor design, air supply, fume extraction, or heat exchanger can lead to excessive CO emissions or lower energy efficiency. Outcomes show that it is crucial to minimize unused stove volume and to enhance gaseous mixing for reduction of CO emissions, while maintaining sufficiently high temperatures for supporting fast oxidation reactions. Results of comparisons of conducted analyses can be useful in areas related to process optimization and improvement of combustion and devolatilization reaction conditions in the small scale heating units.",
journal = "Fuel",
title = "Determination of Arrhenius parameters for advanced kinetic model used in CFD modeling of the wood pellet combustion process",
volume = "323",
pages = "124323",
doi = "10.1016/j.fuel.2022.124323"
}

Manić, N. G.,& Janković, B. Ž.. (2022). Determination of Arrhenius parameters for advanced kinetic model used in CFD modeling of the wood pellet combustion process. in Fuel, 323, 124323.
https://doi.org/10.1016/j.fuel.2022.124323

Manić NG, Janković BŽ. Determination of Arrhenius parameters for advanced kinetic model used in CFD modeling of the wood pellet combustion process. in Fuel. 2022;323:124323.
doi:10.1016/j.fuel.2022.124323 .

Manić, Nebojša G., Janković, Bojan Ž., "Determination of Arrhenius parameters for advanced kinetic model used in CFD modeling of the wood pellet combustion process" in Fuel, 323 (2022):124323,
https://doi.org/10.1016/j.fuel.2022.124323 . .